1 /* 2 * Broadcom NetXtreme-E RoCE driver. 3 * 4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term 5 * Broadcom refers to Broadcom Limited and/or its subsidiaries. 6 * 7 * This software is available to you under a choice of one of two 8 * licenses. You may choose to be licensed under the terms of the GNU 9 * General Public License (GPL) Version 2, available from the file 10 * COPYING in the main directory of this source tree, or the 11 * BSD license below: 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in 21 * the documentation and/or other materials provided with the 22 * distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 * 36 * Description: IB Verbs interpreter 37 */ 38 39 #include <linux/interrupt.h> 40 #include <linux/types.h> 41 #include <linux/pci.h> 42 #include <linux/netdevice.h> 43 #include <linux/if_ether.h> 44 #include <net/addrconf.h> 45 46 #include <rdma/ib_verbs.h> 47 #include <rdma/ib_user_verbs.h> 48 #include <rdma/ib_umem.h> 49 #include <rdma/ib_addr.h> 50 #include <rdma/ib_mad.h> 51 #include <rdma/ib_cache.h> 52 #include <rdma/ib_pma.h> 53 #include <rdma/uverbs_ioctl.h> 54 #include <linux/hashtable.h> 55 56 #include "roce_hsi.h" 57 #include "qplib_res.h" 58 #include "qplib_sp.h" 59 #include "qplib_fp.h" 60 #include "qplib_rcfw.h" 61 62 #include "bnxt_re.h" 63 #include "ib_verbs.h" 64 #include "debugfs.h" 65 66 #include <rdma/uverbs_types.h> 67 #include <rdma/uverbs_std_types.h> 68 69 #include <rdma/ib_user_ioctl_cmds.h> 70 71 #define UVERBS_MODULE_NAME bnxt_re 72 #include <rdma/uverbs_named_ioctl.h> 73 74 #include <rdma/bnxt_re-abi.h> 75 76 static int __from_ib_access_flags(int iflags) 77 { 78 int qflags = 0; 79 80 if (iflags & IB_ACCESS_LOCAL_WRITE) 81 qflags |= BNXT_QPLIB_ACCESS_LOCAL_WRITE; 82 if (iflags & IB_ACCESS_REMOTE_READ) 83 qflags |= BNXT_QPLIB_ACCESS_REMOTE_READ; 84 if (iflags & IB_ACCESS_REMOTE_WRITE) 85 qflags |= BNXT_QPLIB_ACCESS_REMOTE_WRITE; 86 if (iflags & IB_ACCESS_REMOTE_ATOMIC) 87 qflags |= BNXT_QPLIB_ACCESS_REMOTE_ATOMIC; 88 if (iflags & IB_ACCESS_MW_BIND) 89 qflags |= BNXT_QPLIB_ACCESS_MW_BIND; 90 if (iflags & IB_ZERO_BASED) 91 qflags |= BNXT_QPLIB_ACCESS_ZERO_BASED; 92 if (iflags & IB_ACCESS_ON_DEMAND) 93 qflags |= BNXT_QPLIB_ACCESS_ON_DEMAND; 94 return qflags; 95 }; 96 97 static int __to_ib_access_flags(int qflags) 98 { 99 int iflags = 0; 100 101 if (qflags & BNXT_QPLIB_ACCESS_LOCAL_WRITE) 102 iflags |= IB_ACCESS_LOCAL_WRITE; 103 if (qflags & BNXT_QPLIB_ACCESS_REMOTE_WRITE) 104 iflags |= IB_ACCESS_REMOTE_WRITE; 105 if (qflags & BNXT_QPLIB_ACCESS_REMOTE_READ) 106 iflags |= IB_ACCESS_REMOTE_READ; 107 if (qflags & BNXT_QPLIB_ACCESS_REMOTE_ATOMIC) 108 iflags |= IB_ACCESS_REMOTE_ATOMIC; 109 if (qflags & BNXT_QPLIB_ACCESS_MW_BIND) 110 iflags |= IB_ACCESS_MW_BIND; 111 if (qflags & BNXT_QPLIB_ACCESS_ZERO_BASED) 112 iflags |= IB_ZERO_BASED; 113 if (qflags & BNXT_QPLIB_ACCESS_ON_DEMAND) 114 iflags |= IB_ACCESS_ON_DEMAND; 115 return iflags; 116 } 117 118 static u8 __qp_access_flags_from_ib(struct bnxt_qplib_chip_ctx *cctx, int iflags) 119 { 120 u8 qflags = 0; 121 122 if (!bnxt_qplib_is_chip_gen_p5_p7(cctx)) 123 /* For Wh+ */ 124 return (u8)__from_ib_access_flags(iflags); 125 126 /* For P5, P7 and later chips */ 127 if (iflags & IB_ACCESS_LOCAL_WRITE) 128 qflags |= CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE; 129 if (iflags & IB_ACCESS_REMOTE_WRITE) 130 qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_WRITE; 131 if (iflags & IB_ACCESS_REMOTE_READ) 132 qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_READ; 133 if (iflags & IB_ACCESS_REMOTE_ATOMIC) 134 qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_ATOMIC; 135 136 return qflags; 137 } 138 139 static int __qp_access_flags_to_ib(struct bnxt_qplib_chip_ctx *cctx, u8 qflags) 140 { 141 int iflags = 0; 142 143 if (!bnxt_qplib_is_chip_gen_p5_p7(cctx)) 144 /* For Wh+ */ 145 return __to_ib_access_flags(qflags); 146 147 /* For P5, P7 and later chips */ 148 if (qflags & CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE) 149 iflags |= IB_ACCESS_LOCAL_WRITE; 150 if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_WRITE) 151 iflags |= IB_ACCESS_REMOTE_WRITE; 152 if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_READ) 153 iflags |= IB_ACCESS_REMOTE_READ; 154 if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_ATOMIC) 155 iflags |= IB_ACCESS_REMOTE_ATOMIC; 156 157 return iflags; 158 } 159 160 static void bnxt_re_check_and_set_relaxed_ordering(struct bnxt_re_dev *rdev, 161 struct bnxt_qplib_mrw *qplib_mr) 162 { 163 if (_is_relaxed_ordering_supported(rdev->dev_attr->dev_cap_flags2) && 164 pcie_relaxed_ordering_enabled(rdev->en_dev->pdev)) 165 qplib_mr->flags |= CMDQ_REGISTER_MR_FLAGS_ENABLE_RO; 166 } 167 168 static int bnxt_re_build_sgl(struct ib_sge *ib_sg_list, 169 struct bnxt_qplib_sge *sg_list, int num) 170 { 171 int i, total = 0; 172 173 for (i = 0; i < num; i++) { 174 sg_list[i].addr = ib_sg_list[i].addr; 175 sg_list[i].lkey = ib_sg_list[i].lkey; 176 sg_list[i].size = ib_sg_list[i].length; 177 total += sg_list[i].size; 178 } 179 return total; 180 } 181 182 /* Device */ 183 int bnxt_re_query_device(struct ib_device *ibdev, 184 struct ib_device_attr *ib_attr, 185 struct ib_udata *udata) 186 { 187 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 188 struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr; 189 190 memset(ib_attr, 0, sizeof(*ib_attr)); 191 memcpy(&ib_attr->fw_ver, dev_attr->fw_ver, 192 min(sizeof(dev_attr->fw_ver), 193 sizeof(ib_attr->fw_ver))); 194 addrconf_addr_eui48((u8 *)&ib_attr->sys_image_guid, 195 rdev->netdev->dev_addr); 196 ib_attr->max_mr_size = BNXT_RE_MAX_MR_SIZE; 197 ib_attr->page_size_cap = BNXT_RE_PAGE_SIZE_SUPPORTED; 198 199 ib_attr->vendor_id = rdev->en_dev->pdev->vendor; 200 ib_attr->vendor_part_id = rdev->en_dev->pdev->device; 201 ib_attr->hw_ver = rdev->en_dev->pdev->revision; 202 ib_attr->max_qp = dev_attr->max_qp; 203 ib_attr->max_qp_wr = dev_attr->max_qp_wqes; 204 ib_attr->device_cap_flags = 205 IB_DEVICE_CURR_QP_STATE_MOD 206 | IB_DEVICE_RC_RNR_NAK_GEN 207 | IB_DEVICE_SHUTDOWN_PORT 208 | IB_DEVICE_SYS_IMAGE_GUID 209 | IB_DEVICE_RESIZE_MAX_WR 210 | IB_DEVICE_PORT_ACTIVE_EVENT 211 | IB_DEVICE_N_NOTIFY_CQ 212 | IB_DEVICE_MEM_WINDOW 213 | IB_DEVICE_MEM_WINDOW_TYPE_2B 214 | IB_DEVICE_MEM_MGT_EXTENSIONS; 215 ib_attr->kernel_cap_flags = IBK_LOCAL_DMA_LKEY; 216 ib_attr->max_send_sge = dev_attr->max_qp_sges; 217 ib_attr->max_recv_sge = dev_attr->max_qp_sges; 218 ib_attr->max_sge_rd = dev_attr->max_qp_sges; 219 ib_attr->max_cq = dev_attr->max_cq; 220 ib_attr->max_cqe = dev_attr->max_cq_wqes; 221 ib_attr->max_mr = dev_attr->max_mr; 222 ib_attr->max_pd = dev_attr->max_pd; 223 ib_attr->max_qp_rd_atom = dev_attr->max_qp_rd_atom; 224 ib_attr->max_qp_init_rd_atom = dev_attr->max_qp_init_rd_atom; 225 ib_attr->atomic_cap = IB_ATOMIC_NONE; 226 ib_attr->masked_atomic_cap = IB_ATOMIC_NONE; 227 if (dev_attr->is_atomic) { 228 ib_attr->atomic_cap = IB_ATOMIC_GLOB; 229 ib_attr->masked_atomic_cap = IB_ATOMIC_GLOB; 230 } 231 232 ib_attr->max_ee_rd_atom = 0; 233 ib_attr->max_res_rd_atom = 0; 234 ib_attr->max_ee_init_rd_atom = 0; 235 ib_attr->max_ee = 0; 236 ib_attr->max_rdd = 0; 237 ib_attr->max_mw = dev_attr->max_mw; 238 ib_attr->max_raw_ipv6_qp = 0; 239 ib_attr->max_raw_ethy_qp = dev_attr->max_raw_ethy_qp; 240 ib_attr->max_mcast_grp = 0; 241 ib_attr->max_mcast_qp_attach = 0; 242 ib_attr->max_total_mcast_qp_attach = 0; 243 ib_attr->max_ah = dev_attr->max_ah; 244 245 ib_attr->max_srq = dev_attr->max_srq; 246 ib_attr->max_srq_wr = dev_attr->max_srq_wqes; 247 ib_attr->max_srq_sge = dev_attr->max_srq_sges; 248 249 ib_attr->max_fast_reg_page_list_len = MAX_PBL_LVL_1_PGS; 250 251 ib_attr->max_pkeys = 1; 252 ib_attr->local_ca_ack_delay = BNXT_RE_DEFAULT_ACK_DELAY; 253 return 0; 254 } 255 256 int bnxt_re_modify_device(struct ib_device *ibdev, 257 int device_modify_mask, 258 struct ib_device_modify *device_modify) 259 { 260 ibdev_dbg(ibdev, "Modify device with mask 0x%x", device_modify_mask); 261 262 if (device_modify_mask & ~IB_DEVICE_MODIFY_NODE_DESC) 263 return -EOPNOTSUPP; 264 265 if (!(device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC)) 266 return 0; 267 268 memcpy(ibdev->node_desc, device_modify->node_desc, IB_DEVICE_NODE_DESC_MAX); 269 return 0; 270 } 271 272 /* Port */ 273 int bnxt_re_query_port(struct ib_device *ibdev, u32 port_num, 274 struct ib_port_attr *port_attr) 275 { 276 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 277 struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr; 278 int rc; 279 280 memset(port_attr, 0, sizeof(*port_attr)); 281 282 if (netif_running(rdev->netdev) && netif_carrier_ok(rdev->netdev)) { 283 port_attr->state = IB_PORT_ACTIVE; 284 port_attr->phys_state = IB_PORT_PHYS_STATE_LINK_UP; 285 } else { 286 port_attr->state = IB_PORT_DOWN; 287 port_attr->phys_state = IB_PORT_PHYS_STATE_DISABLED; 288 } 289 port_attr->max_mtu = IB_MTU_4096; 290 port_attr->active_mtu = iboe_get_mtu(rdev->netdev->mtu); 291 /* One GID is reserved for RawEth QP. Report one less */ 292 port_attr->gid_tbl_len = (rdev->rcfw.roce_mirror ? (dev_attr->max_sgid - 1) : 293 dev_attr->max_sgid); 294 port_attr->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | 295 IB_PORT_DEVICE_MGMT_SUP | 296 IB_PORT_VENDOR_CLASS_SUP; 297 port_attr->ip_gids = true; 298 299 port_attr->max_msg_sz = (u32)BNXT_RE_MAX_MR_SIZE_LOW; 300 port_attr->bad_pkey_cntr = 0; 301 port_attr->qkey_viol_cntr = 0; 302 port_attr->pkey_tbl_len = dev_attr->max_pkey; 303 port_attr->lid = 0; 304 port_attr->sm_lid = 0; 305 port_attr->lmc = 0; 306 port_attr->max_vl_num = 4; 307 port_attr->sm_sl = 0; 308 port_attr->subnet_timeout = 0; 309 port_attr->init_type_reply = 0; 310 rc = ib_get_eth_speed(&rdev->ibdev, port_num, &port_attr->active_speed, 311 &port_attr->active_width); 312 313 return rc; 314 } 315 316 int bnxt_re_get_port_immutable(struct ib_device *ibdev, u32 port_num, 317 struct ib_port_immutable *immutable) 318 { 319 struct ib_port_attr port_attr; 320 321 if (bnxt_re_query_port(ibdev, port_num, &port_attr)) 322 return -EINVAL; 323 324 immutable->pkey_tbl_len = port_attr.pkey_tbl_len; 325 immutable->gid_tbl_len = port_attr.gid_tbl_len; 326 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 327 immutable->core_cap_flags |= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP; 328 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 329 return 0; 330 } 331 332 void bnxt_re_query_fw_str(struct ib_device *ibdev, char *str) 333 { 334 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 335 336 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d.%d", 337 rdev->dev_attr->fw_ver[0], rdev->dev_attr->fw_ver[1], 338 rdev->dev_attr->fw_ver[2], rdev->dev_attr->fw_ver[3]); 339 } 340 341 int bnxt_re_query_pkey(struct ib_device *ibdev, u32 port_num, 342 u16 index, u16 *pkey) 343 { 344 if (index > 0) 345 return -EINVAL; 346 347 *pkey = IB_DEFAULT_PKEY_FULL; 348 349 return 0; 350 } 351 352 int bnxt_re_query_gid(struct ib_device *ibdev, u32 port_num, 353 int index, union ib_gid *gid) 354 { 355 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 356 int rc; 357 358 /* Ignore port_num */ 359 memset(gid, 0, sizeof(*gid)); 360 rc = bnxt_qplib_get_sgid(&rdev->qplib_res, 361 &rdev->qplib_res.sgid_tbl, index, 362 (struct bnxt_qplib_gid *)gid); 363 return rc; 364 } 365 366 int bnxt_re_del_gid(const struct ib_gid_attr *attr, void **context) 367 { 368 int rc = 0; 369 struct bnxt_re_gid_ctx *ctx, **ctx_tbl; 370 struct bnxt_re_dev *rdev = to_bnxt_re_dev(attr->device, ibdev); 371 struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl; 372 struct bnxt_qplib_gid *gid_to_del; 373 u16 vlan_id = 0xFFFF; 374 375 /* Delete the entry from the hardware */ 376 ctx = *context; 377 if (!ctx) 378 return -EINVAL; 379 380 if (sgid_tbl->active) { 381 if (ctx->idx >= sgid_tbl->max) 382 return -EINVAL; 383 gid_to_del = &sgid_tbl->tbl[ctx->idx].gid; 384 vlan_id = sgid_tbl->tbl[ctx->idx].vlan_id; 385 /* DEL_GID is called in WQ context(netdevice_event_work_handler) 386 * or via the ib_unregister_device path. In the former case QP1 387 * may not be destroyed yet, in which case just return as FW 388 * needs that entry to be present and will fail it's deletion. 389 * We could get invoked again after QP1 is destroyed OR get an 390 * ADD_GID call with a different GID value for the same index 391 * where we issue MODIFY_GID cmd to update the GID entry -- TBD 392 */ 393 if (ctx->idx == 0 && 394 rdma_link_local_addr((struct in6_addr *)gid_to_del) && 395 ctx->refcnt == 1 && rdev->gsi_ctx.gsi_sqp) { 396 ibdev_dbg(&rdev->ibdev, 397 "Trying to delete GID0 while QP1 is alive\n"); 398 return -EFAULT; 399 } 400 ctx->refcnt--; 401 if (!ctx->refcnt) { 402 rc = bnxt_qplib_del_sgid(sgid_tbl, gid_to_del, 403 vlan_id, true); 404 if (rc) { 405 ibdev_err(&rdev->ibdev, 406 "Failed to remove GID: %#x", rc); 407 } else { 408 ctx_tbl = sgid_tbl->ctx; 409 ctx_tbl[ctx->idx] = NULL; 410 kfree(ctx); 411 } 412 } 413 } else { 414 return -EINVAL; 415 } 416 return rc; 417 } 418 419 int bnxt_re_add_gid(const struct ib_gid_attr *attr, void **context) 420 { 421 int rc; 422 u32 tbl_idx = 0; 423 u16 vlan_id = 0xFFFF; 424 struct bnxt_re_gid_ctx *ctx, **ctx_tbl; 425 struct bnxt_re_dev *rdev = to_bnxt_re_dev(attr->device, ibdev); 426 struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl; 427 428 rc = rdma_read_gid_l2_fields(attr, &vlan_id, NULL); 429 if (rc) 430 return rc; 431 432 rc = bnxt_qplib_add_sgid(sgid_tbl, (struct bnxt_qplib_gid *)&attr->gid, 433 rdev->qplib_res.netdev->dev_addr, 434 vlan_id, true, &tbl_idx, false, 0); 435 if (rc == -EALREADY) { 436 ctx_tbl = sgid_tbl->ctx; 437 ctx_tbl[tbl_idx]->refcnt++; 438 *context = ctx_tbl[tbl_idx]; 439 return 0; 440 } 441 442 if (rc < 0) { 443 ibdev_err(&rdev->ibdev, "Failed to add GID: %#x", rc); 444 return rc; 445 } 446 447 ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); 448 if (!ctx) 449 return -ENOMEM; 450 ctx_tbl = sgid_tbl->ctx; 451 ctx->idx = tbl_idx; 452 ctx->refcnt = 1; 453 ctx_tbl[tbl_idx] = ctx; 454 *context = ctx; 455 456 return rc; 457 } 458 459 enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev, 460 u32 port_num) 461 { 462 return IB_LINK_LAYER_ETHERNET; 463 } 464 465 #define BNXT_RE_FENCE_PBL_SIZE DIV_ROUND_UP(BNXT_RE_FENCE_BYTES, PAGE_SIZE) 466 467 static void bnxt_re_create_fence_wqe(struct bnxt_re_pd *pd) 468 { 469 struct bnxt_re_fence_data *fence = &pd->fence; 470 struct ib_mr *ib_mr = &fence->mr->ib_mr; 471 struct bnxt_qplib_swqe *wqe = &fence->bind_wqe; 472 struct bnxt_re_dev *rdev = pd->rdev; 473 474 if (bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) 475 return; 476 477 memset(wqe, 0, sizeof(*wqe)); 478 wqe->type = BNXT_QPLIB_SWQE_TYPE_BIND_MW; 479 wqe->wr_id = BNXT_QPLIB_FENCE_WRID; 480 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 481 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 482 wqe->bind.zero_based = false; 483 wqe->bind.parent_l_key = ib_mr->lkey; 484 wqe->bind.va = (u64)(unsigned long)fence->va; 485 wqe->bind.length = fence->size; 486 wqe->bind.access_cntl = __from_ib_access_flags(IB_ACCESS_REMOTE_READ); 487 wqe->bind.mw_type = SQ_BIND_MW_TYPE_TYPE1; 488 489 /* Save the initial rkey in fence structure for now; 490 * wqe->bind.r_key will be set at (re)bind time. 491 */ 492 fence->bind_rkey = ib_inc_rkey(fence->mw->rkey); 493 } 494 495 static int bnxt_re_bind_fence_mw(struct bnxt_qplib_qp *qplib_qp) 496 { 497 struct bnxt_re_qp *qp = container_of(qplib_qp, struct bnxt_re_qp, 498 qplib_qp); 499 struct ib_pd *ib_pd = qp->ib_qp.pd; 500 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 501 struct bnxt_re_fence_data *fence = &pd->fence; 502 struct bnxt_qplib_swqe *fence_wqe = &fence->bind_wqe; 503 struct bnxt_qplib_swqe wqe; 504 int rc; 505 506 memcpy(&wqe, fence_wqe, sizeof(wqe)); 507 wqe.bind.r_key = fence->bind_rkey; 508 fence->bind_rkey = ib_inc_rkey(fence->bind_rkey); 509 510 ibdev_dbg(&qp->rdev->ibdev, 511 "Posting bind fence-WQE: rkey: %#x QP: %d PD: %p\n", 512 wqe.bind.r_key, qp->qplib_qp.id, pd); 513 rc = bnxt_qplib_post_send(&qp->qplib_qp, &wqe); 514 if (rc) { 515 ibdev_err(&qp->rdev->ibdev, "Failed to bind fence-WQE\n"); 516 return rc; 517 } 518 bnxt_qplib_post_send_db(&qp->qplib_qp); 519 520 return rc; 521 } 522 523 static void bnxt_re_destroy_fence_mr(struct bnxt_re_pd *pd) 524 { 525 struct bnxt_re_fence_data *fence = &pd->fence; 526 struct bnxt_re_dev *rdev = pd->rdev; 527 struct device *dev = &rdev->en_dev->pdev->dev; 528 struct bnxt_re_mr *mr = fence->mr; 529 530 if (bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) 531 return; 532 533 if (fence->mw) { 534 bnxt_re_dealloc_mw(fence->mw); 535 fence->mw = NULL; 536 } 537 if (mr) { 538 if (mr->ib_mr.rkey) 539 bnxt_qplib_dereg_mrw(&rdev->qplib_res, &mr->qplib_mr, 540 true); 541 if (mr->ib_mr.lkey) 542 bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 543 kfree(mr); 544 fence->mr = NULL; 545 } 546 if (fence->dma_addr) { 547 dma_unmap_single(dev, fence->dma_addr, BNXT_RE_FENCE_BYTES, 548 DMA_BIDIRECTIONAL); 549 fence->dma_addr = 0; 550 } 551 } 552 553 static int bnxt_re_create_fence_mr(struct bnxt_re_pd *pd) 554 { 555 int mr_access_flags = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_MW_BIND; 556 struct bnxt_re_fence_data *fence = &pd->fence; 557 struct bnxt_re_dev *rdev = pd->rdev; 558 struct device *dev = &rdev->en_dev->pdev->dev; 559 struct bnxt_re_mr *mr = NULL; 560 dma_addr_t dma_addr = 0; 561 struct ib_mw *mw; 562 int rc; 563 564 if (bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) 565 return 0; 566 567 dma_addr = dma_map_single(dev, fence->va, BNXT_RE_FENCE_BYTES, 568 DMA_BIDIRECTIONAL); 569 rc = dma_mapping_error(dev, dma_addr); 570 if (rc) { 571 ibdev_err(&rdev->ibdev, "Failed to dma-map fence-MR-mem\n"); 572 rc = -EIO; 573 fence->dma_addr = 0; 574 goto fail; 575 } 576 fence->dma_addr = dma_addr; 577 578 /* Allocate a MR */ 579 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 580 if (!mr) { 581 rc = -ENOMEM; 582 goto fail; 583 } 584 fence->mr = mr; 585 mr->rdev = rdev; 586 mr->qplib_mr.pd = &pd->qplib_pd; 587 mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; 588 mr->qplib_mr.access_flags = __from_ib_access_flags(mr_access_flags); 589 if (!_is_alloc_mr_unified(rdev->dev_attr->dev_cap_flags)) { 590 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); 591 if (rc) { 592 ibdev_err(&rdev->ibdev, "Failed to alloc fence-HW-MR\n"); 593 goto fail; 594 } 595 596 /* Register MR */ 597 mr->ib_mr.lkey = mr->qplib_mr.lkey; 598 } else { 599 mr->qplib_mr.flags = CMDQ_REGISTER_MR_FLAGS_ALLOC_MR; 600 } 601 mr->qplib_mr.va = (u64)(unsigned long)fence->va; 602 mr->qplib_mr.total_size = BNXT_RE_FENCE_BYTES; 603 rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &mr->qplib_mr, NULL, 604 BNXT_RE_FENCE_PBL_SIZE, PAGE_SIZE); 605 if (rc) { 606 ibdev_err(&rdev->ibdev, "Failed to register fence-MR\n"); 607 goto fail; 608 } 609 mr->ib_mr.rkey = mr->qplib_mr.rkey; 610 611 /* Create a fence MW only for kernel consumers */ 612 mw = bnxt_re_alloc_mw(&pd->ib_pd, IB_MW_TYPE_1, NULL); 613 if (IS_ERR(mw)) { 614 ibdev_err(&rdev->ibdev, 615 "Failed to create fence-MW for PD: %p\n", pd); 616 rc = PTR_ERR(mw); 617 goto fail; 618 } 619 fence->mw = mw; 620 621 bnxt_re_create_fence_wqe(pd); 622 return 0; 623 624 fail: 625 bnxt_re_destroy_fence_mr(pd); 626 return rc; 627 } 628 629 static struct bnxt_re_user_mmap_entry* 630 bnxt_re_mmap_entry_insert(struct bnxt_re_ucontext *uctx, u64 mem_offset, 631 enum bnxt_re_mmap_flag mmap_flag, u64 *offset) 632 { 633 struct bnxt_re_user_mmap_entry *entry; 634 int ret; 635 636 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 637 if (!entry) 638 return NULL; 639 640 entry->mem_offset = mem_offset; 641 entry->mmap_flag = mmap_flag; 642 entry->uctx = uctx; 643 644 switch (mmap_flag) { 645 case BNXT_RE_MMAP_SH_PAGE: 646 ret = rdma_user_mmap_entry_insert_exact(&uctx->ib_uctx, 647 &entry->rdma_entry, PAGE_SIZE, 0); 648 break; 649 case BNXT_RE_MMAP_UC_DB: 650 case BNXT_RE_MMAP_WC_DB: 651 case BNXT_RE_MMAP_DBR_BAR: 652 case BNXT_RE_MMAP_DBR_PAGE: 653 case BNXT_RE_MMAP_TOGGLE_PAGE: 654 ret = rdma_user_mmap_entry_insert(&uctx->ib_uctx, 655 &entry->rdma_entry, PAGE_SIZE); 656 break; 657 default: 658 ret = -EINVAL; 659 break; 660 } 661 662 if (ret) { 663 kfree(entry); 664 return NULL; 665 } 666 if (offset) 667 *offset = rdma_user_mmap_get_offset(&entry->rdma_entry); 668 669 return entry; 670 } 671 672 /* Protection Domains */ 673 int bnxt_re_dealloc_pd(struct ib_pd *ib_pd, struct ib_udata *udata) 674 { 675 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 676 struct bnxt_re_dev *rdev = pd->rdev; 677 678 if (udata) { 679 rdma_user_mmap_entry_remove(pd->pd_db_mmap); 680 pd->pd_db_mmap = NULL; 681 } 682 683 bnxt_re_destroy_fence_mr(pd); 684 685 if (pd->qplib_pd.id) { 686 if (!bnxt_qplib_dealloc_pd(&rdev->qplib_res, 687 &rdev->qplib_res.pd_tbl, 688 &pd->qplib_pd)) 689 atomic_dec(&rdev->stats.res.pd_count); 690 } 691 return 0; 692 } 693 694 int bnxt_re_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 695 { 696 struct ib_device *ibdev = ibpd->device; 697 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 698 struct bnxt_re_ucontext *ucntx = rdma_udata_to_drv_context( 699 udata, struct bnxt_re_ucontext, ib_uctx); 700 struct bnxt_re_pd *pd = container_of(ibpd, struct bnxt_re_pd, ib_pd); 701 struct bnxt_re_user_mmap_entry *entry = NULL; 702 u32 active_pds; 703 int rc = 0; 704 705 pd->rdev = rdev; 706 if (bnxt_qplib_alloc_pd(&rdev->qplib_res, &pd->qplib_pd)) { 707 ibdev_err(&rdev->ibdev, "Failed to allocate HW PD"); 708 rc = -ENOMEM; 709 goto fail; 710 } 711 712 if (udata) { 713 struct bnxt_re_pd_resp resp = {}; 714 715 if (!ucntx->dpi.dbr) { 716 /* Allocate DPI in alloc_pd to avoid failing of 717 * ibv_devinfo and family of application when DPIs 718 * are depleted. 719 */ 720 if (bnxt_qplib_alloc_dpi(&rdev->qplib_res, 721 &ucntx->dpi, ucntx, BNXT_QPLIB_DPI_TYPE_UC)) { 722 rc = -ENOMEM; 723 goto dbfail; 724 } 725 } 726 727 resp.pdid = pd->qplib_pd.id; 728 /* Still allow mapping this DBR to the new user PD. */ 729 resp.dpi = ucntx->dpi.dpi; 730 731 entry = bnxt_re_mmap_entry_insert(ucntx, (u64)ucntx->dpi.umdbr, 732 BNXT_RE_MMAP_UC_DB, &resp.dbr); 733 734 if (!entry) { 735 rc = -ENOMEM; 736 goto dbfail; 737 } 738 739 pd->pd_db_mmap = &entry->rdma_entry; 740 741 rc = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); 742 if (rc) { 743 rdma_user_mmap_entry_remove(pd->pd_db_mmap); 744 rc = -EFAULT; 745 goto dbfail; 746 } 747 } 748 749 if (!udata) 750 if (bnxt_re_create_fence_mr(pd)) 751 ibdev_warn(&rdev->ibdev, 752 "Failed to create Fence-MR\n"); 753 active_pds = atomic_inc_return(&rdev->stats.res.pd_count); 754 if (active_pds > rdev->stats.res.pd_watermark) 755 rdev->stats.res.pd_watermark = active_pds; 756 757 return 0; 758 dbfail: 759 bnxt_qplib_dealloc_pd(&rdev->qplib_res, &rdev->qplib_res.pd_tbl, 760 &pd->qplib_pd); 761 fail: 762 return rc; 763 } 764 765 /* Address Handles */ 766 int bnxt_re_destroy_ah(struct ib_ah *ib_ah, u32 flags) 767 { 768 struct bnxt_re_ah *ah = container_of(ib_ah, struct bnxt_re_ah, ib_ah); 769 struct bnxt_re_dev *rdev = ah->rdev; 770 bool block = true; 771 int rc; 772 773 block = !(flags & RDMA_DESTROY_AH_SLEEPABLE); 774 rc = bnxt_qplib_destroy_ah(&rdev->qplib_res, &ah->qplib_ah, block); 775 if (BNXT_RE_CHECK_RC(rc)) { 776 if (rc == -ETIMEDOUT) 777 rc = 0; 778 else 779 goto fail; 780 } 781 atomic_dec(&rdev->stats.res.ah_count); 782 fail: 783 return rc; 784 } 785 786 static u8 bnxt_re_stack_to_dev_nw_type(enum rdma_network_type ntype) 787 { 788 u8 nw_type; 789 790 switch (ntype) { 791 case RDMA_NETWORK_IPV4: 792 nw_type = CMDQ_CREATE_AH_TYPE_V2IPV4; 793 break; 794 case RDMA_NETWORK_IPV6: 795 nw_type = CMDQ_CREATE_AH_TYPE_V2IPV6; 796 break; 797 default: 798 nw_type = CMDQ_CREATE_AH_TYPE_V1; 799 break; 800 } 801 return nw_type; 802 } 803 804 int bnxt_re_create_ah(struct ib_ah *ib_ah, struct rdma_ah_init_attr *init_attr, 805 struct ib_udata *udata) 806 { 807 struct ib_pd *ib_pd = ib_ah->pd; 808 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 809 struct rdma_ah_attr *ah_attr = init_attr->ah_attr; 810 const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr); 811 struct bnxt_re_dev *rdev = pd->rdev; 812 const struct ib_gid_attr *sgid_attr; 813 struct bnxt_re_gid_ctx *ctx; 814 struct bnxt_re_ah *ah = container_of(ib_ah, struct bnxt_re_ah, ib_ah); 815 u32 active_ahs; 816 u8 nw_type; 817 int rc; 818 819 if (!(rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH)) { 820 ibdev_err(&rdev->ibdev, "Failed to alloc AH: GRH not set"); 821 return -EINVAL; 822 } 823 824 ah->rdev = rdev; 825 ah->qplib_ah.pd = &pd->qplib_pd; 826 827 /* Supply the configuration for the HW */ 828 memcpy(ah->qplib_ah.dgid.data, grh->dgid.raw, 829 sizeof(union ib_gid)); 830 sgid_attr = grh->sgid_attr; 831 /* Get the HW context of the GID. The reference 832 * of GID table entry is already taken by the caller. 833 */ 834 ctx = rdma_read_gid_hw_context(sgid_attr); 835 ah->qplib_ah.sgid_index = ctx->idx; 836 ah->qplib_ah.host_sgid_index = grh->sgid_index; 837 ah->qplib_ah.traffic_class = grh->traffic_class; 838 ah->qplib_ah.flow_label = grh->flow_label; 839 ah->qplib_ah.hop_limit = grh->hop_limit; 840 ah->qplib_ah.sl = rdma_ah_get_sl(ah_attr); 841 842 /* Get network header type for this GID */ 843 nw_type = rdma_gid_attr_network_type(sgid_attr); 844 ah->qplib_ah.nw_type = bnxt_re_stack_to_dev_nw_type(nw_type); 845 846 memcpy(ah->qplib_ah.dmac, ah_attr->roce.dmac, ETH_ALEN); 847 rc = bnxt_qplib_create_ah(&rdev->qplib_res, &ah->qplib_ah, 848 !(init_attr->flags & 849 RDMA_CREATE_AH_SLEEPABLE)); 850 if (rc) { 851 ibdev_err(&rdev->ibdev, "Failed to allocate HW AH"); 852 return rc; 853 } 854 855 /* Write AVID to shared page. */ 856 if (udata) { 857 struct bnxt_re_ucontext *uctx = rdma_udata_to_drv_context( 858 udata, struct bnxt_re_ucontext, ib_uctx); 859 unsigned long flag; 860 u32 *wrptr; 861 862 spin_lock_irqsave(&uctx->sh_lock, flag); 863 wrptr = (u32 *)(uctx->shpg + BNXT_RE_AVID_OFFT); 864 *wrptr = ah->qplib_ah.id; 865 wmb(); /* make sure cache is updated. */ 866 spin_unlock_irqrestore(&uctx->sh_lock, flag); 867 } 868 active_ahs = atomic_inc_return(&rdev->stats.res.ah_count); 869 if (active_ahs > rdev->stats.res.ah_watermark) 870 rdev->stats.res.ah_watermark = active_ahs; 871 872 return 0; 873 } 874 875 int bnxt_re_query_ah(struct ib_ah *ib_ah, struct rdma_ah_attr *ah_attr) 876 { 877 struct bnxt_re_ah *ah = container_of(ib_ah, struct bnxt_re_ah, ib_ah); 878 879 ah_attr->type = ib_ah->type; 880 rdma_ah_set_sl(ah_attr, ah->qplib_ah.sl); 881 memcpy(ah_attr->roce.dmac, ah->qplib_ah.dmac, ETH_ALEN); 882 rdma_ah_set_grh(ah_attr, NULL, 0, 883 ah->qplib_ah.host_sgid_index, 884 0, ah->qplib_ah.traffic_class); 885 rdma_ah_set_dgid_raw(ah_attr, ah->qplib_ah.dgid.data); 886 rdma_ah_set_port_num(ah_attr, 1); 887 rdma_ah_set_static_rate(ah_attr, 0); 888 return 0; 889 } 890 891 unsigned long bnxt_re_lock_cqs(struct bnxt_re_qp *qp) 892 __acquires(&qp->scq->cq_lock) __acquires(&qp->rcq->cq_lock) 893 { 894 unsigned long flags; 895 896 spin_lock_irqsave(&qp->scq->cq_lock, flags); 897 if (qp->rcq != qp->scq) 898 spin_lock(&qp->rcq->cq_lock); 899 else 900 __acquire(&qp->rcq->cq_lock); 901 902 return flags; 903 } 904 905 void bnxt_re_unlock_cqs(struct bnxt_re_qp *qp, 906 unsigned long flags) 907 __releases(&qp->scq->cq_lock) __releases(&qp->rcq->cq_lock) 908 { 909 if (qp->rcq != qp->scq) 910 spin_unlock(&qp->rcq->cq_lock); 911 else 912 __release(&qp->rcq->cq_lock); 913 spin_unlock_irqrestore(&qp->scq->cq_lock, flags); 914 } 915 916 static int bnxt_re_destroy_gsi_sqp(struct bnxt_re_qp *qp) 917 { 918 struct bnxt_re_qp *gsi_sqp; 919 struct bnxt_re_ah *gsi_sah; 920 struct bnxt_re_dev *rdev; 921 int rc; 922 923 rdev = qp->rdev; 924 gsi_sqp = rdev->gsi_ctx.gsi_sqp; 925 gsi_sah = rdev->gsi_ctx.gsi_sah; 926 927 ibdev_dbg(&rdev->ibdev, "Destroy the shadow AH\n"); 928 bnxt_qplib_destroy_ah(&rdev->qplib_res, 929 &gsi_sah->qplib_ah, 930 true); 931 atomic_dec(&rdev->stats.res.ah_count); 932 bnxt_qplib_clean_qp(&qp->qplib_qp); 933 934 ibdev_dbg(&rdev->ibdev, "Destroy the shadow QP\n"); 935 rc = bnxt_qplib_destroy_qp(&rdev->qplib_res, &gsi_sqp->qplib_qp); 936 if (rc) { 937 ibdev_err(&rdev->ibdev, "Destroy Shadow QP failed"); 938 goto fail; 939 } 940 bnxt_qplib_free_qp_res(&rdev->qplib_res, &gsi_sqp->qplib_qp); 941 942 /* remove from active qp list */ 943 mutex_lock(&rdev->qp_lock); 944 list_del(&gsi_sqp->list); 945 mutex_unlock(&rdev->qp_lock); 946 atomic_dec(&rdev->stats.res.qp_count); 947 948 kfree(rdev->gsi_ctx.sqp_tbl); 949 kfree(gsi_sah); 950 kfree(gsi_sqp); 951 rdev->gsi_ctx.gsi_sqp = NULL; 952 rdev->gsi_ctx.gsi_sah = NULL; 953 rdev->gsi_ctx.sqp_tbl = NULL; 954 955 return 0; 956 fail: 957 return rc; 958 } 959 960 static void bnxt_re_del_unique_gid(struct bnxt_re_dev *rdev) 961 { 962 int rc; 963 964 if (!rdev->rcfw.roce_mirror) 965 return; 966 967 rc = bnxt_qplib_del_sgid(&rdev->qplib_res.sgid_tbl, 968 (struct bnxt_qplib_gid *)&rdev->ugid, 969 0xFFFF, true); 970 if (rc) 971 dev_err(rdev_to_dev(rdev), "Failed to delete unique GID, rc: %d\n", rc); 972 } 973 974 /* Queue Pairs */ 975 int bnxt_re_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata) 976 { 977 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 978 struct bnxt_qplib_qp *qplib_qp = &qp->qplib_qp; 979 struct bnxt_re_dev *rdev = qp->rdev; 980 struct bnxt_qplib_nq *scq_nq = NULL; 981 struct bnxt_qplib_nq *rcq_nq = NULL; 982 unsigned int flags; 983 int rc; 984 985 bnxt_re_debug_rem_qpinfo(rdev, qp); 986 987 bnxt_qplib_flush_cqn_wq(&qp->qplib_qp); 988 989 rc = bnxt_qplib_destroy_qp(&rdev->qplib_res, &qp->qplib_qp); 990 if (rc) 991 ibdev_err(&rdev->ibdev, "Failed to destroy HW QP"); 992 993 if (rdma_is_kernel_res(&qp->ib_qp.res)) { 994 flags = bnxt_re_lock_cqs(qp); 995 bnxt_qplib_clean_qp(&qp->qplib_qp); 996 bnxt_re_unlock_cqs(qp, flags); 997 } 998 999 bnxt_qplib_free_qp_res(&rdev->qplib_res, &qp->qplib_qp); 1000 1001 if (ib_qp->qp_type == IB_QPT_GSI && rdev->gsi_ctx.gsi_sqp) 1002 bnxt_re_destroy_gsi_sqp(qp); 1003 1004 mutex_lock(&rdev->qp_lock); 1005 list_del(&qp->list); 1006 mutex_unlock(&rdev->qp_lock); 1007 atomic_dec(&rdev->stats.res.qp_count); 1008 if (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_RC) 1009 atomic_dec(&rdev->stats.res.rc_qp_count); 1010 else if (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_UD) 1011 atomic_dec(&rdev->stats.res.ud_qp_count); 1012 1013 if (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_RAW_ETHERTYPE) 1014 bnxt_re_del_unique_gid(rdev); 1015 1016 ib_umem_release(qp->rumem); 1017 ib_umem_release(qp->sumem); 1018 1019 /* Flush all the entries of notification queue associated with 1020 * given qp. 1021 */ 1022 scq_nq = qplib_qp->scq->nq; 1023 rcq_nq = qplib_qp->rcq->nq; 1024 bnxt_re_synchronize_nq(scq_nq); 1025 if (scq_nq != rcq_nq) 1026 bnxt_re_synchronize_nq(rcq_nq); 1027 1028 return 0; 1029 } 1030 1031 static u8 __from_ib_qp_type(enum ib_qp_type type) 1032 { 1033 switch (type) { 1034 case IB_QPT_GSI: 1035 return CMDQ_CREATE_QP1_TYPE_GSI; 1036 case IB_QPT_RC: 1037 return CMDQ_CREATE_QP_TYPE_RC; 1038 case IB_QPT_UD: 1039 return CMDQ_CREATE_QP_TYPE_UD; 1040 case IB_QPT_RAW_PACKET: 1041 return CMDQ_CREATE_QP_TYPE_RAW_ETHERTYPE; 1042 default: 1043 return IB_QPT_MAX; 1044 } 1045 } 1046 1047 static u16 bnxt_re_setup_rwqe_size(struct bnxt_qplib_qp *qplqp, 1048 int rsge, int max) 1049 { 1050 if (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) 1051 rsge = max; 1052 return bnxt_re_get_rwqe_size(rsge); 1053 } 1054 1055 static u16 bnxt_re_get_wqe_size(int ilsize, int nsge) 1056 { 1057 u16 wqe_size, calc_ils; 1058 1059 wqe_size = bnxt_re_get_swqe_size(nsge); 1060 if (ilsize) { 1061 calc_ils = sizeof(struct sq_send_hdr) + ilsize; 1062 wqe_size = max_t(u16, calc_ils, wqe_size); 1063 wqe_size = ALIGN(wqe_size, sizeof(struct sq_send_hdr)); 1064 } 1065 return wqe_size; 1066 } 1067 1068 static int bnxt_re_setup_swqe_size(struct bnxt_re_qp *qp, 1069 struct ib_qp_init_attr *init_attr) 1070 { 1071 struct bnxt_qplib_dev_attr *dev_attr; 1072 struct bnxt_qplib_qp *qplqp; 1073 struct bnxt_re_dev *rdev; 1074 struct bnxt_qplib_q *sq; 1075 int align, ilsize; 1076 1077 rdev = qp->rdev; 1078 qplqp = &qp->qplib_qp; 1079 sq = &qplqp->sq; 1080 dev_attr = rdev->dev_attr; 1081 1082 align = sizeof(struct sq_send_hdr); 1083 ilsize = ALIGN(init_attr->cap.max_inline_data, align); 1084 1085 /* For gen p4 and gen p5 fixed wqe compatibility mode 1086 * wqe size is fixed to 128 bytes - ie 6 SGEs 1087 */ 1088 if (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) { 1089 sq->wqe_size = bnxt_re_get_swqe_size(BNXT_STATIC_MAX_SGE); 1090 sq->max_sge = BNXT_STATIC_MAX_SGE; 1091 } else { 1092 sq->wqe_size = bnxt_re_get_wqe_size(ilsize, sq->max_sge); 1093 if (sq->wqe_size > bnxt_re_get_swqe_size(dev_attr->max_qp_sges)) 1094 return -EINVAL; 1095 } 1096 1097 if (init_attr->cap.max_inline_data) { 1098 qplqp->max_inline_data = sq->wqe_size - 1099 sizeof(struct sq_send_hdr); 1100 init_attr->cap.max_inline_data = qplqp->max_inline_data; 1101 } 1102 1103 return 0; 1104 } 1105 1106 static int bnxt_re_init_user_qp(struct bnxt_re_dev *rdev, struct bnxt_re_pd *pd, 1107 struct bnxt_re_qp *qp, struct bnxt_re_ucontext *cntx, 1108 struct bnxt_re_qp_req *ureq) 1109 { 1110 struct bnxt_qplib_qp *qplib_qp; 1111 int bytes = 0, psn_sz; 1112 struct ib_umem *umem; 1113 int psn_nume; 1114 1115 qplib_qp = &qp->qplib_qp; 1116 1117 bytes = (qplib_qp->sq.max_wqe * qplib_qp->sq.wqe_size); 1118 /* Consider mapping PSN search memory only for RC QPs. */ 1119 if (qplib_qp->type == CMDQ_CREATE_QP_TYPE_RC) { 1120 psn_sz = bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx) ? 1121 sizeof(struct sq_psn_search_ext) : 1122 sizeof(struct sq_psn_search); 1123 if (cntx && bnxt_re_is_var_size_supported(rdev, cntx)) { 1124 psn_nume = ureq->sq_slots; 1125 } else { 1126 psn_nume = (qplib_qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ? 1127 qplib_qp->sq.max_wqe : ((qplib_qp->sq.max_wqe * qplib_qp->sq.wqe_size) / 1128 sizeof(struct bnxt_qplib_sge)); 1129 } 1130 if (_is_host_msn_table(rdev->qplib_res.dattr->dev_cap_flags2)) 1131 psn_nume = roundup_pow_of_two(psn_nume); 1132 bytes += (psn_nume * psn_sz); 1133 } 1134 1135 bytes = PAGE_ALIGN(bytes); 1136 umem = ib_umem_get(&rdev->ibdev, ureq->qpsva, bytes, 1137 IB_ACCESS_LOCAL_WRITE); 1138 if (IS_ERR(umem)) 1139 return PTR_ERR(umem); 1140 1141 qp->sumem = umem; 1142 qplib_qp->sq.sg_info.umem = umem; 1143 qplib_qp->sq.sg_info.pgsize = PAGE_SIZE; 1144 qplib_qp->sq.sg_info.pgshft = PAGE_SHIFT; 1145 qplib_qp->qp_handle = ureq->qp_handle; 1146 1147 if (!qp->qplib_qp.srq) { 1148 bytes = (qplib_qp->rq.max_wqe * qplib_qp->rq.wqe_size); 1149 bytes = PAGE_ALIGN(bytes); 1150 umem = ib_umem_get(&rdev->ibdev, ureq->qprva, bytes, 1151 IB_ACCESS_LOCAL_WRITE); 1152 if (IS_ERR(umem)) 1153 goto rqfail; 1154 qp->rumem = umem; 1155 qplib_qp->rq.sg_info.umem = umem; 1156 qplib_qp->rq.sg_info.pgsize = PAGE_SIZE; 1157 qplib_qp->rq.sg_info.pgshft = PAGE_SHIFT; 1158 } 1159 1160 qplib_qp->dpi = &cntx->dpi; 1161 return 0; 1162 rqfail: 1163 ib_umem_release(qp->sumem); 1164 qp->sumem = NULL; 1165 memset(&qplib_qp->sq.sg_info, 0, sizeof(qplib_qp->sq.sg_info)); 1166 1167 return PTR_ERR(umem); 1168 } 1169 1170 static struct bnxt_re_ah *bnxt_re_create_shadow_qp_ah 1171 (struct bnxt_re_pd *pd, 1172 struct bnxt_qplib_res *qp1_res, 1173 struct bnxt_qplib_qp *qp1_qp) 1174 { 1175 struct bnxt_re_dev *rdev = pd->rdev; 1176 struct bnxt_re_ah *ah; 1177 union ib_gid sgid; 1178 int rc; 1179 1180 ah = kzalloc(sizeof(*ah), GFP_KERNEL); 1181 if (!ah) 1182 return NULL; 1183 1184 ah->rdev = rdev; 1185 ah->qplib_ah.pd = &pd->qplib_pd; 1186 1187 rc = bnxt_re_query_gid(&rdev->ibdev, 1, 0, &sgid); 1188 if (rc) 1189 goto fail; 1190 1191 /* supply the dgid data same as sgid */ 1192 memcpy(ah->qplib_ah.dgid.data, &sgid.raw, 1193 sizeof(union ib_gid)); 1194 ah->qplib_ah.sgid_index = 0; 1195 1196 ah->qplib_ah.traffic_class = 0; 1197 ah->qplib_ah.flow_label = 0; 1198 ah->qplib_ah.hop_limit = 1; 1199 ah->qplib_ah.sl = 0; 1200 /* Have DMAC same as SMAC */ 1201 ether_addr_copy(ah->qplib_ah.dmac, rdev->netdev->dev_addr); 1202 1203 rc = bnxt_qplib_create_ah(&rdev->qplib_res, &ah->qplib_ah, false); 1204 if (rc) { 1205 ibdev_err(&rdev->ibdev, 1206 "Failed to allocate HW AH for Shadow QP"); 1207 goto fail; 1208 } 1209 atomic_inc(&rdev->stats.res.ah_count); 1210 1211 return ah; 1212 1213 fail: 1214 kfree(ah); 1215 return NULL; 1216 } 1217 1218 static struct bnxt_re_qp *bnxt_re_create_shadow_qp 1219 (struct bnxt_re_pd *pd, 1220 struct bnxt_qplib_res *qp1_res, 1221 struct bnxt_qplib_qp *qp1_qp) 1222 { 1223 struct bnxt_re_dev *rdev = pd->rdev; 1224 struct bnxt_re_qp *qp; 1225 int rc; 1226 1227 qp = kzalloc(sizeof(*qp), GFP_KERNEL); 1228 if (!qp) 1229 return NULL; 1230 1231 qp->rdev = rdev; 1232 1233 /* Initialize the shadow QP structure from the QP1 values */ 1234 ether_addr_copy(qp->qplib_qp.smac, rdev->netdev->dev_addr); 1235 1236 qp->qplib_qp.pd = &pd->qplib_pd; 1237 qp->qplib_qp.qp_handle = (u64)(unsigned long)(&qp->qplib_qp); 1238 qp->qplib_qp.type = IB_QPT_UD; 1239 1240 qp->qplib_qp.max_inline_data = 0; 1241 qp->qplib_qp.sig_type = true; 1242 1243 /* Shadow QP SQ depth should be same as QP1 RQ depth */ 1244 qp->qplib_qp.sq.wqe_size = bnxt_re_get_wqe_size(0, 6); 1245 qp->qplib_qp.sq.max_wqe = qp1_qp->rq.max_wqe; 1246 qp->qplib_qp.sq.max_sw_wqe = qp1_qp->rq.max_wqe; 1247 qp->qplib_qp.sq.max_sge = 2; 1248 /* Q full delta can be 1 since it is internal QP */ 1249 qp->qplib_qp.sq.q_full_delta = 1; 1250 qp->qplib_qp.sq.sg_info.pgsize = PAGE_SIZE; 1251 qp->qplib_qp.sq.sg_info.pgshft = PAGE_SHIFT; 1252 1253 qp->qplib_qp.scq = qp1_qp->scq; 1254 qp->qplib_qp.rcq = qp1_qp->rcq; 1255 1256 qp->qplib_qp.rq.wqe_size = bnxt_re_get_rwqe_size(6); 1257 qp->qplib_qp.rq.max_wqe = qp1_qp->rq.max_wqe; 1258 qp->qplib_qp.rq.max_sw_wqe = qp1_qp->rq.max_wqe; 1259 qp->qplib_qp.rq.max_sge = qp1_qp->rq.max_sge; 1260 /* Q full delta can be 1 since it is internal QP */ 1261 qp->qplib_qp.rq.q_full_delta = 1; 1262 qp->qplib_qp.rq.sg_info.pgsize = PAGE_SIZE; 1263 qp->qplib_qp.rq.sg_info.pgshft = PAGE_SHIFT; 1264 1265 qp->qplib_qp.mtu = qp1_qp->mtu; 1266 1267 qp->qplib_qp.sq_hdr_buf_size = 0; 1268 qp->qplib_qp.rq_hdr_buf_size = BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6; 1269 qp->qplib_qp.dpi = &rdev->dpi_privileged; 1270 1271 rc = bnxt_qplib_create_qp(qp1_res, &qp->qplib_qp); 1272 if (rc) 1273 goto fail; 1274 1275 spin_lock_init(&qp->sq_lock); 1276 INIT_LIST_HEAD(&qp->list); 1277 mutex_lock(&rdev->qp_lock); 1278 list_add_tail(&qp->list, &rdev->qp_list); 1279 atomic_inc(&rdev->stats.res.qp_count); 1280 mutex_unlock(&rdev->qp_lock); 1281 return qp; 1282 fail: 1283 kfree(qp); 1284 return NULL; 1285 } 1286 1287 static int bnxt_re_init_rq_attr(struct bnxt_re_qp *qp, 1288 struct ib_qp_init_attr *init_attr, 1289 struct bnxt_re_ucontext *uctx) 1290 { 1291 struct bnxt_qplib_dev_attr *dev_attr; 1292 struct bnxt_qplib_qp *qplqp; 1293 struct bnxt_re_dev *rdev; 1294 struct bnxt_qplib_q *rq; 1295 int entries; 1296 1297 rdev = qp->rdev; 1298 qplqp = &qp->qplib_qp; 1299 rq = &qplqp->rq; 1300 dev_attr = rdev->dev_attr; 1301 1302 if (init_attr->srq) { 1303 struct bnxt_re_srq *srq; 1304 1305 srq = container_of(init_attr->srq, struct bnxt_re_srq, ib_srq); 1306 qplqp->srq = &srq->qplib_srq; 1307 rq->max_wqe = 0; 1308 } else { 1309 rq->max_sge = init_attr->cap.max_recv_sge; 1310 if (rq->max_sge > dev_attr->max_qp_sges) 1311 rq->max_sge = dev_attr->max_qp_sges; 1312 init_attr->cap.max_recv_sge = rq->max_sge; 1313 rq->wqe_size = bnxt_re_setup_rwqe_size(qplqp, rq->max_sge, 1314 dev_attr->max_qp_sges); 1315 /* Allocate 1 more than what's provided so posting max doesn't 1316 * mean empty. 1317 */ 1318 entries = bnxt_re_init_depth(init_attr->cap.max_recv_wr + 1, uctx); 1319 rq->max_wqe = min_t(u32, entries, dev_attr->max_qp_wqes + 1); 1320 rq->max_sw_wqe = rq->max_wqe; 1321 rq->q_full_delta = 0; 1322 rq->sg_info.pgsize = PAGE_SIZE; 1323 rq->sg_info.pgshft = PAGE_SHIFT; 1324 } 1325 1326 return 0; 1327 } 1328 1329 static void bnxt_re_adjust_gsi_rq_attr(struct bnxt_re_qp *qp) 1330 { 1331 struct bnxt_qplib_dev_attr *dev_attr; 1332 struct bnxt_qplib_qp *qplqp; 1333 struct bnxt_re_dev *rdev; 1334 1335 rdev = qp->rdev; 1336 qplqp = &qp->qplib_qp; 1337 dev_attr = rdev->dev_attr; 1338 1339 if (!bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) { 1340 qplqp->rq.max_sge = dev_attr->max_qp_sges; 1341 if (qplqp->rq.max_sge > dev_attr->max_qp_sges) 1342 qplqp->rq.max_sge = dev_attr->max_qp_sges; 1343 qplqp->rq.max_sge = 6; 1344 } 1345 } 1346 1347 static int bnxt_re_init_sq_attr(struct bnxt_re_qp *qp, 1348 struct ib_qp_init_attr *init_attr, 1349 struct bnxt_re_ucontext *uctx, 1350 struct bnxt_re_qp_req *ureq) 1351 { 1352 struct bnxt_qplib_dev_attr *dev_attr; 1353 struct bnxt_qplib_qp *qplqp; 1354 struct bnxt_re_dev *rdev; 1355 struct bnxt_qplib_q *sq; 1356 int diff = 0; 1357 int entries; 1358 int rc; 1359 1360 rdev = qp->rdev; 1361 qplqp = &qp->qplib_qp; 1362 sq = &qplqp->sq; 1363 dev_attr = rdev->dev_attr; 1364 1365 sq->max_sge = init_attr->cap.max_send_sge; 1366 entries = init_attr->cap.max_send_wr; 1367 if (uctx && qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE) { 1368 sq->max_wqe = ureq->sq_slots; 1369 sq->max_sw_wqe = ureq->sq_slots; 1370 sq->wqe_size = sizeof(struct sq_sge); 1371 } else { 1372 if (sq->max_sge > dev_attr->max_qp_sges) { 1373 sq->max_sge = dev_attr->max_qp_sges; 1374 init_attr->cap.max_send_sge = sq->max_sge; 1375 } 1376 1377 rc = bnxt_re_setup_swqe_size(qp, init_attr); 1378 if (rc) 1379 return rc; 1380 1381 /* Allocate 128 + 1 more than what's provided */ 1382 diff = (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE) ? 1383 0 : BNXT_QPLIB_RESERVED_QP_WRS; 1384 entries = bnxt_re_init_depth(entries + diff + 1, uctx); 1385 sq->max_wqe = min_t(u32, entries, dev_attr->max_qp_wqes + diff + 1); 1386 if (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE) 1387 sq->max_sw_wqe = bnxt_qplib_get_depth(sq, qplqp->wqe_mode, true); 1388 else 1389 sq->max_sw_wqe = sq->max_wqe; 1390 1391 } 1392 sq->q_full_delta = diff + 1; 1393 /* 1394 * Reserving one slot for Phantom WQE. Application can 1395 * post one extra entry in this case. But allowing this to avoid 1396 * unexpected Queue full condition 1397 */ 1398 qplqp->sq.q_full_delta -= 1; 1399 qplqp->sq.sg_info.pgsize = PAGE_SIZE; 1400 qplqp->sq.sg_info.pgshft = PAGE_SHIFT; 1401 1402 return 0; 1403 } 1404 1405 static void bnxt_re_adjust_gsi_sq_attr(struct bnxt_re_qp *qp, 1406 struct ib_qp_init_attr *init_attr, 1407 struct bnxt_re_ucontext *uctx) 1408 { 1409 struct bnxt_qplib_dev_attr *dev_attr; 1410 struct bnxt_qplib_qp *qplqp; 1411 struct bnxt_re_dev *rdev; 1412 int entries; 1413 1414 rdev = qp->rdev; 1415 qplqp = &qp->qplib_qp; 1416 dev_attr = rdev->dev_attr; 1417 1418 if (!bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) { 1419 entries = bnxt_re_init_depth(init_attr->cap.max_send_wr + 1, uctx); 1420 qplqp->sq.max_wqe = min_t(u32, entries, 1421 dev_attr->max_qp_wqes + 1); 1422 qplqp->sq.q_full_delta = qplqp->sq.max_wqe - 1423 init_attr->cap.max_send_wr; 1424 qplqp->sq.max_sge++; /* Need one extra sge to put UD header */ 1425 if (qplqp->sq.max_sge > dev_attr->max_qp_sges) 1426 qplqp->sq.max_sge = dev_attr->max_qp_sges; 1427 } 1428 } 1429 1430 static int bnxt_re_init_qp_type(struct bnxt_re_dev *rdev, 1431 struct ib_qp_init_attr *init_attr) 1432 { 1433 struct bnxt_qplib_chip_ctx *chip_ctx; 1434 int qptype; 1435 1436 chip_ctx = rdev->chip_ctx; 1437 1438 qptype = __from_ib_qp_type(init_attr->qp_type); 1439 if (qptype == IB_QPT_MAX) { 1440 ibdev_err(&rdev->ibdev, "QP type 0x%x not supported", qptype); 1441 qptype = -EOPNOTSUPP; 1442 goto out; 1443 } 1444 1445 if (bnxt_qplib_is_chip_gen_p5_p7(chip_ctx) && 1446 init_attr->qp_type == IB_QPT_GSI) 1447 qptype = CMDQ_CREATE_QP_TYPE_GSI; 1448 out: 1449 return qptype; 1450 } 1451 1452 static int bnxt_re_init_qp_attr(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd, 1453 struct ib_qp_init_attr *init_attr, 1454 struct bnxt_re_ucontext *uctx, 1455 struct bnxt_re_qp_req *ureq) 1456 { 1457 struct bnxt_qplib_dev_attr *dev_attr; 1458 struct bnxt_qplib_qp *qplqp; 1459 struct bnxt_re_dev *rdev; 1460 struct bnxt_re_cq *cq; 1461 int rc = 0, qptype; 1462 1463 rdev = qp->rdev; 1464 qplqp = &qp->qplib_qp; 1465 dev_attr = rdev->dev_attr; 1466 1467 /* Setup misc params */ 1468 ether_addr_copy(qplqp->smac, rdev->netdev->dev_addr); 1469 qplqp->pd = &pd->qplib_pd; 1470 qplqp->qp_handle = (u64)qplqp; 1471 qplqp->max_inline_data = init_attr->cap.max_inline_data; 1472 qplqp->sig_type = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1473 qptype = bnxt_re_init_qp_type(rdev, init_attr); 1474 if (qptype < 0) { 1475 rc = qptype; 1476 goto out; 1477 } 1478 qplqp->type = (u8)qptype; 1479 qplqp->wqe_mode = bnxt_re_is_var_size_supported(rdev, uctx); 1480 if (init_attr->qp_type == IB_QPT_RC) { 1481 qplqp->max_rd_atomic = dev_attr->max_qp_rd_atom; 1482 qplqp->max_dest_rd_atomic = dev_attr->max_qp_init_rd_atom; 1483 } 1484 qplqp->mtu = ib_mtu_enum_to_int(iboe_get_mtu(rdev->netdev->mtu)); 1485 qplqp->dpi = &rdev->dpi_privileged; /* Doorbell page */ 1486 if (init_attr->create_flags) { 1487 ibdev_dbg(&rdev->ibdev, 1488 "QP create flags 0x%x not supported", 1489 init_attr->create_flags); 1490 return -EOPNOTSUPP; 1491 } 1492 1493 /* Setup CQs */ 1494 if (init_attr->send_cq) { 1495 cq = container_of(init_attr->send_cq, struct bnxt_re_cq, ib_cq); 1496 qplqp->scq = &cq->qplib_cq; 1497 qp->scq = cq; 1498 } 1499 1500 if (init_attr->recv_cq) { 1501 cq = container_of(init_attr->recv_cq, struct bnxt_re_cq, ib_cq); 1502 qplqp->rcq = &cq->qplib_cq; 1503 qp->rcq = cq; 1504 } 1505 1506 /* Setup RQ/SRQ */ 1507 rc = bnxt_re_init_rq_attr(qp, init_attr, uctx); 1508 if (rc) 1509 goto out; 1510 if (init_attr->qp_type == IB_QPT_GSI) 1511 bnxt_re_adjust_gsi_rq_attr(qp); 1512 1513 /* Setup SQ */ 1514 rc = bnxt_re_init_sq_attr(qp, init_attr, uctx, ureq); 1515 if (rc) 1516 goto out; 1517 if (init_attr->qp_type == IB_QPT_GSI) 1518 bnxt_re_adjust_gsi_sq_attr(qp, init_attr, uctx); 1519 1520 if (uctx) /* This will update DPI and qp_handle */ 1521 rc = bnxt_re_init_user_qp(rdev, pd, qp, uctx, ureq); 1522 out: 1523 return rc; 1524 } 1525 1526 static int bnxt_re_create_shadow_gsi(struct bnxt_re_qp *qp, 1527 struct bnxt_re_pd *pd) 1528 { 1529 struct bnxt_re_sqp_entries *sqp_tbl; 1530 struct bnxt_re_dev *rdev; 1531 struct bnxt_re_qp *sqp; 1532 struct bnxt_re_ah *sah; 1533 int rc = 0; 1534 1535 rdev = qp->rdev; 1536 /* Create a shadow QP to handle the QP1 traffic */ 1537 sqp_tbl = kcalloc(BNXT_RE_MAX_GSI_SQP_ENTRIES, sizeof(*sqp_tbl), 1538 GFP_KERNEL); 1539 if (!sqp_tbl) 1540 return -ENOMEM; 1541 rdev->gsi_ctx.sqp_tbl = sqp_tbl; 1542 1543 sqp = bnxt_re_create_shadow_qp(pd, &rdev->qplib_res, &qp->qplib_qp); 1544 if (!sqp) { 1545 rc = -ENODEV; 1546 ibdev_err(&rdev->ibdev, "Failed to create Shadow QP for QP1"); 1547 goto out; 1548 } 1549 rdev->gsi_ctx.gsi_sqp = sqp; 1550 1551 sqp->rcq = qp->rcq; 1552 sqp->scq = qp->scq; 1553 sah = bnxt_re_create_shadow_qp_ah(pd, &rdev->qplib_res, 1554 &qp->qplib_qp); 1555 if (!sah) { 1556 bnxt_qplib_destroy_qp(&rdev->qplib_res, 1557 &sqp->qplib_qp); 1558 rc = -ENODEV; 1559 ibdev_err(&rdev->ibdev, 1560 "Failed to create AH entry for ShadowQP"); 1561 goto out; 1562 } 1563 rdev->gsi_ctx.gsi_sah = sah; 1564 1565 return 0; 1566 out: 1567 kfree(sqp_tbl); 1568 return rc; 1569 } 1570 1571 static int bnxt_re_create_gsi_qp(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd, 1572 struct ib_qp_init_attr *init_attr) 1573 { 1574 struct bnxt_re_dev *rdev; 1575 struct bnxt_qplib_qp *qplqp; 1576 int rc; 1577 1578 rdev = qp->rdev; 1579 qplqp = &qp->qplib_qp; 1580 1581 qplqp->rq_hdr_buf_size = BNXT_QPLIB_MAX_QP1_RQ_HDR_SIZE_V2; 1582 qplqp->sq_hdr_buf_size = BNXT_QPLIB_MAX_QP1_SQ_HDR_SIZE_V2; 1583 1584 rc = bnxt_qplib_create_qp1(&rdev->qplib_res, qplqp); 1585 if (rc) { 1586 ibdev_err(&rdev->ibdev, "create HW QP1 failed!"); 1587 goto out; 1588 } 1589 1590 rc = bnxt_re_create_shadow_gsi(qp, pd); 1591 out: 1592 return rc; 1593 } 1594 1595 static bool bnxt_re_test_qp_limits(struct bnxt_re_dev *rdev, 1596 struct ib_qp_init_attr *init_attr, 1597 struct bnxt_qplib_dev_attr *dev_attr) 1598 { 1599 bool rc = true; 1600 1601 if (init_attr->cap.max_send_wr > dev_attr->max_qp_wqes || 1602 init_attr->cap.max_recv_wr > dev_attr->max_qp_wqes || 1603 init_attr->cap.max_send_sge > dev_attr->max_qp_sges || 1604 init_attr->cap.max_recv_sge > dev_attr->max_qp_sges || 1605 init_attr->cap.max_inline_data > dev_attr->max_inline_data) { 1606 ibdev_err(&rdev->ibdev, 1607 "Create QP failed - max exceeded! 0x%x/0x%x 0x%x/0x%x 0x%x/0x%x 0x%x/0x%x 0x%x/0x%x", 1608 init_attr->cap.max_send_wr, dev_attr->max_qp_wqes, 1609 init_attr->cap.max_recv_wr, dev_attr->max_qp_wqes, 1610 init_attr->cap.max_send_sge, dev_attr->max_qp_sges, 1611 init_attr->cap.max_recv_sge, dev_attr->max_qp_sges, 1612 init_attr->cap.max_inline_data, 1613 dev_attr->max_inline_data); 1614 rc = false; 1615 } 1616 return rc; 1617 } 1618 1619 static int bnxt_re_add_unique_gid(struct bnxt_re_dev *rdev) 1620 { 1621 struct bnxt_qplib_ctx *hctx = &rdev->qplib_ctx; 1622 struct bnxt_qplib_res *res = &rdev->qplib_res; 1623 int rc; 1624 1625 if (!rdev->rcfw.roce_mirror) 1626 return 0; 1627 1628 rdev->ugid.global.subnet_prefix = cpu_to_be64(0xfe8000000000abcdLL); 1629 addrconf_ifid_eui48(&rdev->ugid.raw[8], rdev->netdev); 1630 1631 rc = bnxt_qplib_add_sgid(&res->sgid_tbl, 1632 (struct bnxt_qplib_gid *)&rdev->ugid, 1633 rdev->qplib_res.netdev->dev_addr, 1634 0xFFFF, true, &rdev->ugid_index, true, 1635 hctx->stats3.fw_id); 1636 if (rc) 1637 dev_err(rdev_to_dev(rdev), "Failed to add unique GID. rc = %d\n", rc); 1638 1639 return rc; 1640 } 1641 1642 int bnxt_re_create_qp(struct ib_qp *ib_qp, struct ib_qp_init_attr *qp_init_attr, 1643 struct ib_udata *udata) 1644 { 1645 struct bnxt_qplib_dev_attr *dev_attr; 1646 struct bnxt_re_ucontext *uctx; 1647 struct bnxt_re_qp_req ureq; 1648 struct bnxt_re_dev *rdev; 1649 struct bnxt_re_pd *pd; 1650 struct bnxt_re_qp *qp; 1651 struct ib_pd *ib_pd; 1652 u32 active_qps; 1653 int rc; 1654 1655 ib_pd = ib_qp->pd; 1656 pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 1657 rdev = pd->rdev; 1658 dev_attr = rdev->dev_attr; 1659 qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 1660 1661 uctx = rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 1662 if (udata) 1663 if (ib_copy_from_udata(&ureq, udata, min(udata->inlen, sizeof(ureq)))) 1664 return -EFAULT; 1665 1666 rc = bnxt_re_test_qp_limits(rdev, qp_init_attr, dev_attr); 1667 if (!rc) { 1668 rc = -EINVAL; 1669 goto fail; 1670 } 1671 1672 qp->rdev = rdev; 1673 rc = bnxt_re_init_qp_attr(qp, pd, qp_init_attr, uctx, &ureq); 1674 if (rc) 1675 goto fail; 1676 1677 if (qp_init_attr->qp_type == IB_QPT_GSI && 1678 !(bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx))) { 1679 rc = bnxt_re_create_gsi_qp(qp, pd, qp_init_attr); 1680 if (rc == -ENODEV) 1681 goto qp_destroy; 1682 if (rc) 1683 goto fail; 1684 } else { 1685 rc = bnxt_qplib_create_qp(&rdev->qplib_res, &qp->qplib_qp); 1686 if (rc) { 1687 ibdev_err(&rdev->ibdev, "Failed to create HW QP"); 1688 goto free_umem; 1689 } 1690 if (udata) { 1691 struct bnxt_re_qp_resp resp; 1692 1693 resp.qpid = qp->qplib_qp.id; 1694 resp.rsvd = 0; 1695 rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1696 if (rc) { 1697 ibdev_err(&rdev->ibdev, "Failed to copy QP udata"); 1698 goto qp_destroy; 1699 } 1700 } 1701 } 1702 1703 /* Support for RawEth QP is added to capture TCP pkt dump. 1704 * So unique SGID is used to avoid incorrect statistics on per 1705 * function stats_ctx 1706 */ 1707 if (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_RAW_ETHERTYPE) { 1708 rc = bnxt_re_add_unique_gid(rdev); 1709 if (rc) 1710 goto qp_destroy; 1711 qp->qplib_qp.ugid_index = rdev->ugid_index; 1712 } 1713 1714 qp->ib_qp.qp_num = qp->qplib_qp.id; 1715 if (qp_init_attr->qp_type == IB_QPT_GSI) 1716 rdev->gsi_ctx.gsi_qp = qp; 1717 spin_lock_init(&qp->sq_lock); 1718 spin_lock_init(&qp->rq_lock); 1719 INIT_LIST_HEAD(&qp->list); 1720 mutex_lock(&rdev->qp_lock); 1721 list_add_tail(&qp->list, &rdev->qp_list); 1722 mutex_unlock(&rdev->qp_lock); 1723 active_qps = atomic_inc_return(&rdev->stats.res.qp_count); 1724 if (active_qps > rdev->stats.res.qp_watermark) 1725 rdev->stats.res.qp_watermark = active_qps; 1726 if (qp_init_attr->qp_type == IB_QPT_RC) { 1727 active_qps = atomic_inc_return(&rdev->stats.res.rc_qp_count); 1728 if (active_qps > rdev->stats.res.rc_qp_watermark) 1729 rdev->stats.res.rc_qp_watermark = active_qps; 1730 } else if (qp_init_attr->qp_type == IB_QPT_UD) { 1731 active_qps = atomic_inc_return(&rdev->stats.res.ud_qp_count); 1732 if (active_qps > rdev->stats.res.ud_qp_watermark) 1733 rdev->stats.res.ud_qp_watermark = active_qps; 1734 } 1735 bnxt_re_debug_add_qpinfo(rdev, qp); 1736 1737 return 0; 1738 qp_destroy: 1739 bnxt_qplib_destroy_qp(&rdev->qplib_res, &qp->qplib_qp); 1740 free_umem: 1741 ib_umem_release(qp->rumem); 1742 ib_umem_release(qp->sumem); 1743 fail: 1744 return rc; 1745 } 1746 1747 static u8 __from_ib_qp_state(enum ib_qp_state state) 1748 { 1749 switch (state) { 1750 case IB_QPS_RESET: 1751 return CMDQ_MODIFY_QP_NEW_STATE_RESET; 1752 case IB_QPS_INIT: 1753 return CMDQ_MODIFY_QP_NEW_STATE_INIT; 1754 case IB_QPS_RTR: 1755 return CMDQ_MODIFY_QP_NEW_STATE_RTR; 1756 case IB_QPS_RTS: 1757 return CMDQ_MODIFY_QP_NEW_STATE_RTS; 1758 case IB_QPS_SQD: 1759 return CMDQ_MODIFY_QP_NEW_STATE_SQD; 1760 case IB_QPS_SQE: 1761 return CMDQ_MODIFY_QP_NEW_STATE_SQE; 1762 case IB_QPS_ERR: 1763 default: 1764 return CMDQ_MODIFY_QP_NEW_STATE_ERR; 1765 } 1766 } 1767 1768 static enum ib_qp_state __to_ib_qp_state(u8 state) 1769 { 1770 switch (state) { 1771 case CMDQ_MODIFY_QP_NEW_STATE_RESET: 1772 return IB_QPS_RESET; 1773 case CMDQ_MODIFY_QP_NEW_STATE_INIT: 1774 return IB_QPS_INIT; 1775 case CMDQ_MODIFY_QP_NEW_STATE_RTR: 1776 return IB_QPS_RTR; 1777 case CMDQ_MODIFY_QP_NEW_STATE_RTS: 1778 return IB_QPS_RTS; 1779 case CMDQ_MODIFY_QP_NEW_STATE_SQD: 1780 return IB_QPS_SQD; 1781 case CMDQ_MODIFY_QP_NEW_STATE_SQE: 1782 return IB_QPS_SQE; 1783 case CMDQ_MODIFY_QP_NEW_STATE_ERR: 1784 default: 1785 return IB_QPS_ERR; 1786 } 1787 } 1788 1789 static u32 __from_ib_mtu(enum ib_mtu mtu) 1790 { 1791 switch (mtu) { 1792 case IB_MTU_256: 1793 return CMDQ_MODIFY_QP_PATH_MTU_MTU_256; 1794 case IB_MTU_512: 1795 return CMDQ_MODIFY_QP_PATH_MTU_MTU_512; 1796 case IB_MTU_1024: 1797 return CMDQ_MODIFY_QP_PATH_MTU_MTU_1024; 1798 case IB_MTU_2048: 1799 return CMDQ_MODIFY_QP_PATH_MTU_MTU_2048; 1800 case IB_MTU_4096: 1801 return CMDQ_MODIFY_QP_PATH_MTU_MTU_4096; 1802 default: 1803 return CMDQ_MODIFY_QP_PATH_MTU_MTU_2048; 1804 } 1805 } 1806 1807 static enum ib_mtu __to_ib_mtu(u32 mtu) 1808 { 1809 switch (mtu & CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) { 1810 case CMDQ_MODIFY_QP_PATH_MTU_MTU_256: 1811 return IB_MTU_256; 1812 case CMDQ_MODIFY_QP_PATH_MTU_MTU_512: 1813 return IB_MTU_512; 1814 case CMDQ_MODIFY_QP_PATH_MTU_MTU_1024: 1815 return IB_MTU_1024; 1816 case CMDQ_MODIFY_QP_PATH_MTU_MTU_2048: 1817 return IB_MTU_2048; 1818 case CMDQ_MODIFY_QP_PATH_MTU_MTU_4096: 1819 return IB_MTU_4096; 1820 default: 1821 return IB_MTU_2048; 1822 } 1823 } 1824 1825 /* Shared Receive Queues */ 1826 int bnxt_re_destroy_srq(struct ib_srq *ib_srq, struct ib_udata *udata) 1827 { 1828 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 1829 ib_srq); 1830 struct bnxt_re_dev *rdev = srq->rdev; 1831 struct bnxt_qplib_srq *qplib_srq = &srq->qplib_srq; 1832 1833 if (rdev->chip_ctx->modes.toggle_bits & BNXT_QPLIB_SRQ_TOGGLE_BIT) { 1834 free_page((unsigned long)srq->uctx_srq_page); 1835 hash_del(&srq->hash_entry); 1836 } 1837 bnxt_qplib_destroy_srq(&rdev->qplib_res, qplib_srq); 1838 ib_umem_release(srq->umem); 1839 atomic_dec(&rdev->stats.res.srq_count); 1840 return 0; 1841 } 1842 1843 static int bnxt_re_init_user_srq(struct bnxt_re_dev *rdev, 1844 struct bnxt_re_pd *pd, 1845 struct bnxt_re_srq *srq, 1846 struct ib_udata *udata) 1847 { 1848 struct bnxt_re_srq_req ureq; 1849 struct bnxt_qplib_srq *qplib_srq = &srq->qplib_srq; 1850 struct ib_umem *umem; 1851 int bytes = 0; 1852 struct bnxt_re_ucontext *cntx = rdma_udata_to_drv_context( 1853 udata, struct bnxt_re_ucontext, ib_uctx); 1854 1855 if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) 1856 return -EFAULT; 1857 1858 bytes = (qplib_srq->max_wqe * qplib_srq->wqe_size); 1859 bytes = PAGE_ALIGN(bytes); 1860 umem = ib_umem_get(&rdev->ibdev, ureq.srqva, bytes, 1861 IB_ACCESS_LOCAL_WRITE); 1862 if (IS_ERR(umem)) 1863 return PTR_ERR(umem); 1864 1865 srq->umem = umem; 1866 qplib_srq->sg_info.umem = umem; 1867 qplib_srq->sg_info.pgsize = PAGE_SIZE; 1868 qplib_srq->sg_info.pgshft = PAGE_SHIFT; 1869 qplib_srq->srq_handle = ureq.srq_handle; 1870 qplib_srq->dpi = &cntx->dpi; 1871 1872 return 0; 1873 } 1874 1875 int bnxt_re_create_srq(struct ib_srq *ib_srq, 1876 struct ib_srq_init_attr *srq_init_attr, 1877 struct ib_udata *udata) 1878 { 1879 struct bnxt_qplib_dev_attr *dev_attr; 1880 struct bnxt_re_ucontext *uctx; 1881 struct bnxt_re_dev *rdev; 1882 struct bnxt_re_srq *srq; 1883 struct bnxt_re_pd *pd; 1884 struct ib_pd *ib_pd; 1885 u32 active_srqs; 1886 int rc, entries; 1887 1888 ib_pd = ib_srq->pd; 1889 pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 1890 rdev = pd->rdev; 1891 dev_attr = rdev->dev_attr; 1892 srq = container_of(ib_srq, struct bnxt_re_srq, ib_srq); 1893 1894 if (srq_init_attr->attr.max_wr >= dev_attr->max_srq_wqes) { 1895 ibdev_err(&rdev->ibdev, "Create CQ failed - max exceeded"); 1896 rc = -EINVAL; 1897 goto exit; 1898 } 1899 1900 if (srq_init_attr->srq_type != IB_SRQT_BASIC) { 1901 rc = -EOPNOTSUPP; 1902 goto exit; 1903 } 1904 1905 uctx = rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 1906 srq->rdev = rdev; 1907 srq->qplib_srq.pd = &pd->qplib_pd; 1908 srq->qplib_srq.dpi = &rdev->dpi_privileged; 1909 /* Allocate 1 more than what's provided so posting max doesn't 1910 * mean empty 1911 */ 1912 entries = bnxt_re_init_depth(srq_init_attr->attr.max_wr + 1, uctx); 1913 if (entries > dev_attr->max_srq_wqes + 1) 1914 entries = dev_attr->max_srq_wqes + 1; 1915 srq->qplib_srq.max_wqe = entries; 1916 1917 srq->qplib_srq.max_sge = srq_init_attr->attr.max_sge; 1918 /* 128 byte wqe size for SRQ . So use max sges */ 1919 srq->qplib_srq.wqe_size = bnxt_re_get_rwqe_size(dev_attr->max_srq_sges); 1920 srq->qplib_srq.threshold = srq_init_attr->attr.srq_limit; 1921 srq->srq_limit = srq_init_attr->attr.srq_limit; 1922 srq->qplib_srq.eventq_hw_ring_id = rdev->nqr->nq[0].ring_id; 1923 srq->qplib_srq.sg_info.pgsize = PAGE_SIZE; 1924 srq->qplib_srq.sg_info.pgshft = PAGE_SHIFT; 1925 1926 if (udata) { 1927 rc = bnxt_re_init_user_srq(rdev, pd, srq, udata); 1928 if (rc) 1929 goto fail; 1930 } 1931 1932 rc = bnxt_qplib_create_srq(&rdev->qplib_res, &srq->qplib_srq); 1933 if (rc) { 1934 ibdev_err(&rdev->ibdev, "Create HW SRQ failed!"); 1935 goto fail; 1936 } 1937 1938 if (udata) { 1939 struct bnxt_re_srq_resp resp = {}; 1940 1941 resp.srqid = srq->qplib_srq.id; 1942 if (rdev->chip_ctx->modes.toggle_bits & BNXT_QPLIB_SRQ_TOGGLE_BIT) { 1943 hash_add(rdev->srq_hash, &srq->hash_entry, srq->qplib_srq.id); 1944 srq->uctx_srq_page = (void *)get_zeroed_page(GFP_KERNEL); 1945 if (!srq->uctx_srq_page) { 1946 rc = -ENOMEM; 1947 goto fail; 1948 } 1949 resp.comp_mask |= BNXT_RE_SRQ_TOGGLE_PAGE_SUPPORT; 1950 } 1951 rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1952 if (rc) { 1953 ibdev_err(&rdev->ibdev, "SRQ copy to udata failed!"); 1954 bnxt_qplib_destroy_srq(&rdev->qplib_res, 1955 &srq->qplib_srq); 1956 goto fail; 1957 } 1958 } 1959 active_srqs = atomic_inc_return(&rdev->stats.res.srq_count); 1960 if (active_srqs > rdev->stats.res.srq_watermark) 1961 rdev->stats.res.srq_watermark = active_srqs; 1962 spin_lock_init(&srq->lock); 1963 1964 return 0; 1965 1966 fail: 1967 ib_umem_release(srq->umem); 1968 exit: 1969 return rc; 1970 } 1971 1972 int bnxt_re_modify_srq(struct ib_srq *ib_srq, struct ib_srq_attr *srq_attr, 1973 enum ib_srq_attr_mask srq_attr_mask, 1974 struct ib_udata *udata) 1975 { 1976 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 1977 ib_srq); 1978 struct bnxt_re_dev *rdev = srq->rdev; 1979 1980 switch (srq_attr_mask) { 1981 case IB_SRQ_MAX_WR: 1982 /* SRQ resize is not supported */ 1983 return -EINVAL; 1984 case IB_SRQ_LIMIT: 1985 /* Change the SRQ threshold */ 1986 if (srq_attr->srq_limit > srq->qplib_srq.max_wqe) 1987 return -EINVAL; 1988 1989 srq->qplib_srq.threshold = srq_attr->srq_limit; 1990 bnxt_qplib_srq_arm_db(&srq->qplib_srq.dbinfo, srq->qplib_srq.threshold); 1991 1992 /* On success, update the shadow */ 1993 srq->srq_limit = srq_attr->srq_limit; 1994 /* No need to Build and send response back to udata */ 1995 return 0; 1996 default: 1997 ibdev_err(&rdev->ibdev, 1998 "Unsupported srq_attr_mask 0x%x", srq_attr_mask); 1999 return -EINVAL; 2000 } 2001 } 2002 2003 int bnxt_re_query_srq(struct ib_srq *ib_srq, struct ib_srq_attr *srq_attr) 2004 { 2005 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 2006 ib_srq); 2007 struct bnxt_re_srq tsrq; 2008 struct bnxt_re_dev *rdev = srq->rdev; 2009 int rc; 2010 2011 /* Get live SRQ attr */ 2012 tsrq.qplib_srq.id = srq->qplib_srq.id; 2013 rc = bnxt_qplib_query_srq(&rdev->qplib_res, &tsrq.qplib_srq); 2014 if (rc) { 2015 ibdev_err(&rdev->ibdev, "Query HW SRQ failed!"); 2016 return rc; 2017 } 2018 srq_attr->max_wr = srq->qplib_srq.max_wqe; 2019 srq_attr->max_sge = srq->qplib_srq.max_sge; 2020 srq_attr->srq_limit = tsrq.qplib_srq.threshold; 2021 2022 return 0; 2023 } 2024 2025 int bnxt_re_post_srq_recv(struct ib_srq *ib_srq, const struct ib_recv_wr *wr, 2026 const struct ib_recv_wr **bad_wr) 2027 { 2028 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 2029 ib_srq); 2030 struct bnxt_qplib_swqe wqe; 2031 unsigned long flags; 2032 int rc = 0; 2033 2034 spin_lock_irqsave(&srq->lock, flags); 2035 while (wr) { 2036 /* Transcribe each ib_recv_wr to qplib_swqe */ 2037 wqe.num_sge = wr->num_sge; 2038 bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, wr->num_sge); 2039 wqe.wr_id = wr->wr_id; 2040 wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; 2041 2042 rc = bnxt_qplib_post_srq_recv(&srq->qplib_srq, &wqe); 2043 if (rc) { 2044 *bad_wr = wr; 2045 break; 2046 } 2047 wr = wr->next; 2048 } 2049 spin_unlock_irqrestore(&srq->lock, flags); 2050 2051 return rc; 2052 } 2053 static int bnxt_re_modify_shadow_qp(struct bnxt_re_dev *rdev, 2054 struct bnxt_re_qp *qp1_qp, 2055 int qp_attr_mask) 2056 { 2057 struct bnxt_re_qp *qp = rdev->gsi_ctx.gsi_sqp; 2058 int rc; 2059 2060 if (qp_attr_mask & IB_QP_STATE) { 2061 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_STATE; 2062 qp->qplib_qp.state = qp1_qp->qplib_qp.state; 2063 } 2064 if (qp_attr_mask & IB_QP_PKEY_INDEX) { 2065 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY; 2066 qp->qplib_qp.pkey_index = qp1_qp->qplib_qp.pkey_index; 2067 } 2068 2069 if (qp_attr_mask & IB_QP_QKEY) { 2070 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY; 2071 /* Using a Random QKEY */ 2072 qp->qplib_qp.qkey = 0x81818181; 2073 } 2074 if (qp_attr_mask & IB_QP_SQ_PSN) { 2075 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN; 2076 qp->qplib_qp.sq.psn = qp1_qp->qplib_qp.sq.psn; 2077 } 2078 2079 rc = bnxt_qplib_modify_qp(&rdev->qplib_res, &qp->qplib_qp); 2080 if (rc) 2081 ibdev_err(&rdev->ibdev, "Failed to modify Shadow QP for QP1"); 2082 return rc; 2083 } 2084 2085 int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr, 2086 int qp_attr_mask, struct ib_udata *udata) 2087 { 2088 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 2089 struct bnxt_re_dev *rdev = qp->rdev; 2090 struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr; 2091 enum ib_qp_state curr_qp_state, new_qp_state; 2092 int rc, entries; 2093 unsigned int flags; 2094 u8 nw_type; 2095 2096 if (qp_attr_mask & ~IB_QP_ATTR_STANDARD_BITS) 2097 return -EOPNOTSUPP; 2098 2099 qp->qplib_qp.modify_flags = 0; 2100 if (qp_attr_mask & IB_QP_STATE) { 2101 curr_qp_state = __to_ib_qp_state(qp->qplib_qp.cur_qp_state); 2102 new_qp_state = qp_attr->qp_state; 2103 if (!ib_modify_qp_is_ok(curr_qp_state, new_qp_state, 2104 ib_qp->qp_type, qp_attr_mask)) { 2105 ibdev_err(&rdev->ibdev, 2106 "Invalid attribute mask: %#x specified ", 2107 qp_attr_mask); 2108 ibdev_err(&rdev->ibdev, 2109 "for qpn: %#x type: %#x", 2110 ib_qp->qp_num, ib_qp->qp_type); 2111 ibdev_err(&rdev->ibdev, 2112 "curr_qp_state=0x%x, new_qp_state=0x%x\n", 2113 curr_qp_state, new_qp_state); 2114 return -EINVAL; 2115 } 2116 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_STATE; 2117 qp->qplib_qp.state = __from_ib_qp_state(qp_attr->qp_state); 2118 2119 if (!qp->sumem && 2120 qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_ERR) { 2121 ibdev_dbg(&rdev->ibdev, 2122 "Move QP = %p to flush list\n", qp); 2123 flags = bnxt_re_lock_cqs(qp); 2124 bnxt_qplib_add_flush_qp(&qp->qplib_qp); 2125 bnxt_re_unlock_cqs(qp, flags); 2126 } 2127 if (!qp->sumem && 2128 qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_RESET) { 2129 ibdev_dbg(&rdev->ibdev, 2130 "Move QP = %p out of flush list\n", qp); 2131 flags = bnxt_re_lock_cqs(qp); 2132 bnxt_qplib_clean_qp(&qp->qplib_qp); 2133 bnxt_re_unlock_cqs(qp, flags); 2134 } 2135 } 2136 if (qp_attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) { 2137 qp->qplib_qp.modify_flags |= 2138 CMDQ_MODIFY_QP_MODIFY_MASK_EN_SQD_ASYNC_NOTIFY; 2139 qp->qplib_qp.en_sqd_async_notify = true; 2140 } 2141 if (qp_attr_mask & IB_QP_ACCESS_FLAGS) { 2142 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS; 2143 qp->qplib_qp.access = 2144 __qp_access_flags_from_ib(qp->qplib_qp.cctx, 2145 qp_attr->qp_access_flags); 2146 /* LOCAL_WRITE access must be set to allow RC receive */ 2147 qp->qplib_qp.access |= CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE; 2148 } 2149 if (qp_attr_mask & IB_QP_PKEY_INDEX) { 2150 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY; 2151 qp->qplib_qp.pkey_index = qp_attr->pkey_index; 2152 } 2153 if (qp_attr_mask & IB_QP_QKEY) { 2154 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY; 2155 qp->qplib_qp.qkey = qp_attr->qkey; 2156 } 2157 if (qp_attr_mask & IB_QP_AV) { 2158 const struct ib_global_route *grh = 2159 rdma_ah_read_grh(&qp_attr->ah_attr); 2160 const struct ib_gid_attr *sgid_attr; 2161 struct bnxt_re_gid_ctx *ctx; 2162 2163 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_DGID | 2164 CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL | 2165 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX | 2166 CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT | 2167 CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS | 2168 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC | 2169 CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID; 2170 memcpy(qp->qplib_qp.ah.dgid.data, grh->dgid.raw, 2171 sizeof(qp->qplib_qp.ah.dgid.data)); 2172 qp->qplib_qp.ah.flow_label = grh->flow_label; 2173 sgid_attr = grh->sgid_attr; 2174 /* Get the HW context of the GID. The reference 2175 * of GID table entry is already taken by the caller. 2176 */ 2177 ctx = rdma_read_gid_hw_context(sgid_attr); 2178 qp->qplib_qp.ah.sgid_index = ctx->idx; 2179 qp->qplib_qp.ah.host_sgid_index = grh->sgid_index; 2180 qp->qplib_qp.ah.hop_limit = grh->hop_limit; 2181 qp->qplib_qp.ah.traffic_class = grh->traffic_class >> 2; 2182 qp->qplib_qp.ah.sl = rdma_ah_get_sl(&qp_attr->ah_attr); 2183 ether_addr_copy(qp->qplib_qp.ah.dmac, 2184 qp_attr->ah_attr.roce.dmac); 2185 2186 rc = rdma_read_gid_l2_fields(sgid_attr, NULL, 2187 &qp->qplib_qp.smac[0]); 2188 if (rc) 2189 return rc; 2190 2191 nw_type = rdma_gid_attr_network_type(sgid_attr); 2192 switch (nw_type) { 2193 case RDMA_NETWORK_IPV4: 2194 qp->qplib_qp.nw_type = 2195 CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV2_IPV4; 2196 break; 2197 case RDMA_NETWORK_IPV6: 2198 qp->qplib_qp.nw_type = 2199 CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV2_IPV6; 2200 break; 2201 default: 2202 qp->qplib_qp.nw_type = 2203 CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV1; 2204 break; 2205 } 2206 } 2207 2208 if (qp_attr->qp_state == IB_QPS_RTR) { 2209 enum ib_mtu qpmtu; 2210 2211 qpmtu = iboe_get_mtu(rdev->netdev->mtu); 2212 if (qp_attr_mask & IB_QP_PATH_MTU) { 2213 if (ib_mtu_enum_to_int(qp_attr->path_mtu) > 2214 ib_mtu_enum_to_int(qpmtu)) 2215 return -EINVAL; 2216 qpmtu = qp_attr->path_mtu; 2217 } 2218 2219 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU; 2220 qp->qplib_qp.path_mtu = __from_ib_mtu(qpmtu); 2221 qp->qplib_qp.mtu = ib_mtu_enum_to_int(qpmtu); 2222 } 2223 2224 if (qp_attr_mask & IB_QP_TIMEOUT) { 2225 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT; 2226 qp->qplib_qp.timeout = qp_attr->timeout; 2227 } 2228 if (qp_attr_mask & IB_QP_RETRY_CNT) { 2229 qp->qplib_qp.modify_flags |= 2230 CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT; 2231 qp->qplib_qp.retry_cnt = qp_attr->retry_cnt; 2232 } 2233 if (qp_attr_mask & IB_QP_RNR_RETRY) { 2234 qp->qplib_qp.modify_flags |= 2235 CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY; 2236 qp->qplib_qp.rnr_retry = qp_attr->rnr_retry; 2237 } 2238 if (qp_attr_mask & IB_QP_MIN_RNR_TIMER) { 2239 qp->qplib_qp.modify_flags |= 2240 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER; 2241 qp->qplib_qp.min_rnr_timer = qp_attr->min_rnr_timer; 2242 } 2243 if (qp_attr_mask & IB_QP_RQ_PSN) { 2244 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN; 2245 qp->qplib_qp.rq.psn = qp_attr->rq_psn; 2246 } 2247 if (qp_attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { 2248 qp->qplib_qp.modify_flags |= 2249 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC; 2250 /* Cap the max_rd_atomic to device max */ 2251 qp->qplib_qp.max_rd_atomic = min_t(u32, qp_attr->max_rd_atomic, 2252 dev_attr->max_qp_rd_atom); 2253 } 2254 if (qp_attr_mask & IB_QP_SQ_PSN) { 2255 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN; 2256 qp->qplib_qp.sq.psn = qp_attr->sq_psn; 2257 } 2258 if (qp_attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { 2259 if (qp_attr->max_dest_rd_atomic > 2260 dev_attr->max_qp_init_rd_atom) { 2261 ibdev_err(&rdev->ibdev, 2262 "max_dest_rd_atomic requested%d is > dev_max%d", 2263 qp_attr->max_dest_rd_atomic, 2264 dev_attr->max_qp_init_rd_atom); 2265 return -EINVAL; 2266 } 2267 2268 qp->qplib_qp.modify_flags |= 2269 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC; 2270 qp->qplib_qp.max_dest_rd_atomic = qp_attr->max_dest_rd_atomic; 2271 } 2272 if (qp_attr_mask & IB_QP_CAP) { 2273 struct bnxt_re_ucontext *uctx = 2274 rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 2275 2276 qp->qplib_qp.modify_flags |= 2277 CMDQ_MODIFY_QP_MODIFY_MASK_SQ_SIZE | 2278 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_SIZE | 2279 CMDQ_MODIFY_QP_MODIFY_MASK_SQ_SGE | 2280 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_SGE | 2281 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_INLINE_DATA; 2282 if ((qp_attr->cap.max_send_wr >= dev_attr->max_qp_wqes) || 2283 (qp_attr->cap.max_recv_wr >= dev_attr->max_qp_wqes) || 2284 (qp_attr->cap.max_send_sge >= dev_attr->max_qp_sges) || 2285 (qp_attr->cap.max_recv_sge >= dev_attr->max_qp_sges) || 2286 (qp_attr->cap.max_inline_data >= 2287 dev_attr->max_inline_data)) { 2288 ibdev_err(&rdev->ibdev, 2289 "Create QP failed - max exceeded"); 2290 return -EINVAL; 2291 } 2292 entries = bnxt_re_init_depth(qp_attr->cap.max_send_wr, uctx); 2293 qp->qplib_qp.sq.max_wqe = min_t(u32, entries, 2294 dev_attr->max_qp_wqes + 1); 2295 qp->qplib_qp.sq.q_full_delta = qp->qplib_qp.sq.max_wqe - 2296 qp_attr->cap.max_send_wr; 2297 /* 2298 * Reserving one slot for Phantom WQE. Some application can 2299 * post one extra entry in this case. Allowing this to avoid 2300 * unexpected Queue full condition 2301 */ 2302 qp->qplib_qp.sq.q_full_delta -= 1; 2303 qp->qplib_qp.sq.max_sge = qp_attr->cap.max_send_sge; 2304 if (qp->qplib_qp.rq.max_wqe) { 2305 entries = bnxt_re_init_depth(qp_attr->cap.max_recv_wr, uctx); 2306 qp->qplib_qp.rq.max_wqe = 2307 min_t(u32, entries, dev_attr->max_qp_wqes + 1); 2308 qp->qplib_qp.rq.max_sw_wqe = qp->qplib_qp.rq.max_wqe; 2309 qp->qplib_qp.rq.q_full_delta = qp->qplib_qp.rq.max_wqe - 2310 qp_attr->cap.max_recv_wr; 2311 qp->qplib_qp.rq.max_sge = qp_attr->cap.max_recv_sge; 2312 } else { 2313 /* SRQ was used prior, just ignore the RQ caps */ 2314 } 2315 } 2316 if (qp_attr_mask & IB_QP_DEST_QPN) { 2317 qp->qplib_qp.modify_flags |= 2318 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID; 2319 qp->qplib_qp.dest_qpn = qp_attr->dest_qp_num; 2320 } 2321 rc = bnxt_qplib_modify_qp(&rdev->qplib_res, &qp->qplib_qp); 2322 if (rc) { 2323 ibdev_err(&rdev->ibdev, "Failed to modify HW QP"); 2324 return rc; 2325 } 2326 if (ib_qp->qp_type == IB_QPT_GSI && rdev->gsi_ctx.gsi_sqp) 2327 rc = bnxt_re_modify_shadow_qp(rdev, qp, qp_attr_mask); 2328 return rc; 2329 } 2330 2331 int bnxt_re_query_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr, 2332 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr) 2333 { 2334 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 2335 struct bnxt_re_dev *rdev = qp->rdev; 2336 struct bnxt_qplib_qp *qplib_qp; 2337 int rc; 2338 2339 qplib_qp = kzalloc(sizeof(*qplib_qp), GFP_KERNEL); 2340 if (!qplib_qp) 2341 return -ENOMEM; 2342 2343 qplib_qp->id = qp->qplib_qp.id; 2344 qplib_qp->ah.host_sgid_index = qp->qplib_qp.ah.host_sgid_index; 2345 2346 rc = bnxt_qplib_query_qp(&rdev->qplib_res, qplib_qp); 2347 if (rc) { 2348 ibdev_err(&rdev->ibdev, "Failed to query HW QP"); 2349 goto out; 2350 } 2351 qp_attr->qp_state = __to_ib_qp_state(qplib_qp->state); 2352 qp_attr->cur_qp_state = __to_ib_qp_state(qplib_qp->cur_qp_state); 2353 qp_attr->en_sqd_async_notify = qplib_qp->en_sqd_async_notify ? 1 : 0; 2354 qp_attr->qp_access_flags = __qp_access_flags_to_ib(qp->qplib_qp.cctx, 2355 qplib_qp->access); 2356 qp_attr->pkey_index = qplib_qp->pkey_index; 2357 qp_attr->qkey = qplib_qp->qkey; 2358 qp_attr->ah_attr.type = RDMA_AH_ATTR_TYPE_ROCE; 2359 rdma_ah_set_grh(&qp_attr->ah_attr, NULL, qplib_qp->udp_sport, 2360 qplib_qp->ah.host_sgid_index, 2361 qplib_qp->ah.hop_limit, 2362 qplib_qp->ah.traffic_class); 2363 rdma_ah_set_dgid_raw(&qp_attr->ah_attr, qplib_qp->ah.dgid.data); 2364 rdma_ah_set_sl(&qp_attr->ah_attr, qplib_qp->ah.sl); 2365 ether_addr_copy(qp_attr->ah_attr.roce.dmac, qplib_qp->ah.dmac); 2366 qp_attr->path_mtu = __to_ib_mtu(qplib_qp->path_mtu); 2367 qp_attr->timeout = qplib_qp->timeout; 2368 qp_attr->retry_cnt = qplib_qp->retry_cnt; 2369 qp_attr->rnr_retry = qplib_qp->rnr_retry; 2370 qp_attr->min_rnr_timer = qplib_qp->min_rnr_timer; 2371 qp_attr->port_num = __to_ib_port_num(qplib_qp->port_id); 2372 qp_attr->rq_psn = qplib_qp->rq.psn; 2373 qp_attr->max_rd_atomic = qplib_qp->max_rd_atomic; 2374 qp_attr->sq_psn = qplib_qp->sq.psn; 2375 qp_attr->max_dest_rd_atomic = qplib_qp->max_dest_rd_atomic; 2376 qp_init_attr->sq_sig_type = qplib_qp->sig_type ? IB_SIGNAL_ALL_WR : 2377 IB_SIGNAL_REQ_WR; 2378 qp_attr->dest_qp_num = qplib_qp->dest_qpn; 2379 2380 qp_attr->cap.max_send_wr = qp->qplib_qp.sq.max_wqe; 2381 qp_attr->cap.max_send_sge = qp->qplib_qp.sq.max_sge; 2382 qp_attr->cap.max_recv_wr = qp->qplib_qp.rq.max_wqe; 2383 qp_attr->cap.max_recv_sge = qp->qplib_qp.rq.max_sge; 2384 qp_attr->cap.max_inline_data = qp->qplib_qp.max_inline_data; 2385 qp_init_attr->cap = qp_attr->cap; 2386 2387 out: 2388 kfree(qplib_qp); 2389 return rc; 2390 } 2391 2392 /* Routine for sending QP1 packets for RoCE V1 an V2 2393 */ 2394 static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp, 2395 const struct ib_send_wr *wr, 2396 struct bnxt_qplib_swqe *wqe, 2397 int payload_size) 2398 { 2399 struct bnxt_re_ah *ah = container_of(ud_wr(wr)->ah, struct bnxt_re_ah, 2400 ib_ah); 2401 struct bnxt_qplib_ah *qplib_ah = &ah->qplib_ah; 2402 const struct ib_gid_attr *sgid_attr = ah->ib_ah.sgid_attr; 2403 struct bnxt_qplib_sge sge; 2404 u8 nw_type; 2405 u16 ether_type; 2406 union ib_gid dgid; 2407 bool is_eth = false; 2408 bool is_vlan = false; 2409 bool is_grh = false; 2410 bool is_udp = false; 2411 u8 ip_version = 0; 2412 u16 vlan_id = 0xFFFF; 2413 void *buf; 2414 int i, rc; 2415 2416 memset(&qp->qp1_hdr, 0, sizeof(qp->qp1_hdr)); 2417 2418 rc = rdma_read_gid_l2_fields(sgid_attr, &vlan_id, NULL); 2419 if (rc) 2420 return rc; 2421 2422 /* Get network header type for this GID */ 2423 nw_type = rdma_gid_attr_network_type(sgid_attr); 2424 switch (nw_type) { 2425 case RDMA_NETWORK_IPV4: 2426 nw_type = BNXT_RE_ROCEV2_IPV4_PACKET; 2427 break; 2428 case RDMA_NETWORK_IPV6: 2429 nw_type = BNXT_RE_ROCEV2_IPV6_PACKET; 2430 break; 2431 default: 2432 nw_type = BNXT_RE_ROCE_V1_PACKET; 2433 break; 2434 } 2435 memcpy(&dgid.raw, &qplib_ah->dgid, 16); 2436 is_udp = sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP; 2437 if (is_udp) { 2438 if (ipv6_addr_v4mapped((struct in6_addr *)&sgid_attr->gid)) { 2439 ip_version = 4; 2440 ether_type = ETH_P_IP; 2441 } else { 2442 ip_version = 6; 2443 ether_type = ETH_P_IPV6; 2444 } 2445 is_grh = false; 2446 } else { 2447 ether_type = ETH_P_IBOE; 2448 is_grh = true; 2449 } 2450 2451 is_eth = true; 2452 is_vlan = vlan_id && (vlan_id < 0x1000); 2453 2454 ib_ud_header_init(payload_size, !is_eth, is_eth, is_vlan, is_grh, 2455 ip_version, is_udp, 0, &qp->qp1_hdr); 2456 2457 /* ETH */ 2458 ether_addr_copy(qp->qp1_hdr.eth.dmac_h, ah->qplib_ah.dmac); 2459 ether_addr_copy(qp->qp1_hdr.eth.smac_h, qp->qplib_qp.smac); 2460 2461 /* For vlan, check the sgid for vlan existence */ 2462 2463 if (!is_vlan) { 2464 qp->qp1_hdr.eth.type = cpu_to_be16(ether_type); 2465 } else { 2466 qp->qp1_hdr.vlan.type = cpu_to_be16(ether_type); 2467 qp->qp1_hdr.vlan.tag = cpu_to_be16(vlan_id); 2468 } 2469 2470 if (is_grh || (ip_version == 6)) { 2471 memcpy(qp->qp1_hdr.grh.source_gid.raw, sgid_attr->gid.raw, 2472 sizeof(sgid_attr->gid)); 2473 memcpy(qp->qp1_hdr.grh.destination_gid.raw, qplib_ah->dgid.data, 2474 sizeof(sgid_attr->gid)); 2475 qp->qp1_hdr.grh.hop_limit = qplib_ah->hop_limit; 2476 } 2477 2478 if (ip_version == 4) { 2479 qp->qp1_hdr.ip4.tos = 0; 2480 qp->qp1_hdr.ip4.id = 0; 2481 qp->qp1_hdr.ip4.frag_off = htons(IP_DF); 2482 qp->qp1_hdr.ip4.ttl = qplib_ah->hop_limit; 2483 2484 memcpy(&qp->qp1_hdr.ip4.saddr, sgid_attr->gid.raw + 12, 4); 2485 memcpy(&qp->qp1_hdr.ip4.daddr, qplib_ah->dgid.data + 12, 4); 2486 qp->qp1_hdr.ip4.check = ib_ud_ip4_csum(&qp->qp1_hdr); 2487 } 2488 2489 if (is_udp) { 2490 qp->qp1_hdr.udp.dport = htons(ROCE_V2_UDP_DPORT); 2491 qp->qp1_hdr.udp.sport = htons(0x8CD1); 2492 qp->qp1_hdr.udp.csum = 0; 2493 } 2494 2495 /* BTH */ 2496 if (wr->opcode == IB_WR_SEND_WITH_IMM) { 2497 qp->qp1_hdr.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE; 2498 qp->qp1_hdr.immediate_present = 1; 2499 } else { 2500 qp->qp1_hdr.bth.opcode = IB_OPCODE_UD_SEND_ONLY; 2501 } 2502 if (wr->send_flags & IB_SEND_SOLICITED) 2503 qp->qp1_hdr.bth.solicited_event = 1; 2504 /* pad_count */ 2505 qp->qp1_hdr.bth.pad_count = (4 - payload_size) & 3; 2506 2507 /* P_key for QP1 is for all members */ 2508 qp->qp1_hdr.bth.pkey = cpu_to_be16(0xFFFF); 2509 qp->qp1_hdr.bth.destination_qpn = IB_QP1; 2510 qp->qp1_hdr.bth.ack_req = 0; 2511 qp->send_psn++; 2512 qp->send_psn &= BTH_PSN_MASK; 2513 qp->qp1_hdr.bth.psn = cpu_to_be32(qp->send_psn); 2514 /* DETH */ 2515 /* Use the priviledged Q_Key for QP1 */ 2516 qp->qp1_hdr.deth.qkey = cpu_to_be32(IB_QP1_QKEY); 2517 qp->qp1_hdr.deth.source_qpn = IB_QP1; 2518 2519 /* Pack the QP1 to the transmit buffer */ 2520 buf = bnxt_qplib_get_qp1_sq_buf(&qp->qplib_qp, &sge); 2521 if (buf) { 2522 ib_ud_header_pack(&qp->qp1_hdr, buf); 2523 for (i = wqe->num_sge; i; i--) { 2524 wqe->sg_list[i].addr = wqe->sg_list[i - 1].addr; 2525 wqe->sg_list[i].lkey = wqe->sg_list[i - 1].lkey; 2526 wqe->sg_list[i].size = wqe->sg_list[i - 1].size; 2527 } 2528 2529 /* 2530 * Max Header buf size for IPV6 RoCE V2 is 86, 2531 * which is same as the QP1 SQ header buffer. 2532 * Header buf size for IPV4 RoCE V2 can be 66. 2533 * ETH(14) + VLAN(4)+ IP(20) + UDP (8) + BTH(20). 2534 * Subtract 20 bytes from QP1 SQ header buf size 2535 */ 2536 if (is_udp && ip_version == 4) 2537 sge.size -= 20; 2538 /* 2539 * Max Header buf size for RoCE V1 is 78. 2540 * ETH(14) + VLAN(4) + GRH(40) + BTH(20). 2541 * Subtract 8 bytes from QP1 SQ header buf size 2542 */ 2543 if (!is_udp) 2544 sge.size -= 8; 2545 2546 /* Subtract 4 bytes for non vlan packets */ 2547 if (!is_vlan) 2548 sge.size -= 4; 2549 2550 wqe->sg_list[0].addr = sge.addr; 2551 wqe->sg_list[0].lkey = sge.lkey; 2552 wqe->sg_list[0].size = sge.size; 2553 wqe->num_sge++; 2554 2555 } else { 2556 ibdev_err(&qp->rdev->ibdev, "QP1 buffer is empty!"); 2557 rc = -ENOMEM; 2558 } 2559 return rc; 2560 } 2561 2562 /* For the MAD layer, it only provides the recv SGE the size of 2563 * ib_grh + MAD datagram. No Ethernet headers, Ethertype, BTH, DETH, 2564 * nor RoCE iCRC. The Cu+ solution must provide buffer for the entire 2565 * receive packet (334 bytes) with no VLAN and then copy the GRH 2566 * and the MAD datagram out to the provided SGE. 2567 */ 2568 static int bnxt_re_build_qp1_shadow_qp_recv(struct bnxt_re_qp *qp, 2569 const struct ib_recv_wr *wr, 2570 struct bnxt_qplib_swqe *wqe, 2571 int payload_size) 2572 { 2573 struct bnxt_re_sqp_entries *sqp_entry; 2574 struct bnxt_qplib_sge ref, sge; 2575 struct bnxt_re_dev *rdev; 2576 u32 rq_prod_index; 2577 2578 rdev = qp->rdev; 2579 2580 rq_prod_index = bnxt_qplib_get_rq_prod_index(&qp->qplib_qp); 2581 2582 if (!bnxt_qplib_get_qp1_rq_buf(&qp->qplib_qp, &sge)) 2583 return -ENOMEM; 2584 2585 /* Create 1 SGE to receive the entire 2586 * ethernet packet 2587 */ 2588 /* Save the reference from ULP */ 2589 ref.addr = wqe->sg_list[0].addr; 2590 ref.lkey = wqe->sg_list[0].lkey; 2591 ref.size = wqe->sg_list[0].size; 2592 2593 sqp_entry = &rdev->gsi_ctx.sqp_tbl[rq_prod_index]; 2594 2595 /* SGE 1 */ 2596 wqe->sg_list[0].addr = sge.addr; 2597 wqe->sg_list[0].lkey = sge.lkey; 2598 wqe->sg_list[0].size = BNXT_QPLIB_MAX_QP1_RQ_HDR_SIZE_V2; 2599 sge.size -= wqe->sg_list[0].size; 2600 2601 sqp_entry->sge.addr = ref.addr; 2602 sqp_entry->sge.lkey = ref.lkey; 2603 sqp_entry->sge.size = ref.size; 2604 /* Store the wrid for reporting completion */ 2605 sqp_entry->wrid = wqe->wr_id; 2606 /* change the wqe->wrid to table index */ 2607 wqe->wr_id = rq_prod_index; 2608 return 0; 2609 } 2610 2611 static int is_ud_qp(struct bnxt_re_qp *qp) 2612 { 2613 return (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_UD || 2614 qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_GSI); 2615 } 2616 2617 static int bnxt_re_build_send_wqe(struct bnxt_re_qp *qp, 2618 const struct ib_send_wr *wr, 2619 struct bnxt_qplib_swqe *wqe) 2620 { 2621 struct bnxt_re_ah *ah = NULL; 2622 2623 if (is_ud_qp(qp)) { 2624 ah = container_of(ud_wr(wr)->ah, struct bnxt_re_ah, ib_ah); 2625 wqe->send.q_key = ud_wr(wr)->remote_qkey; 2626 wqe->send.dst_qp = ud_wr(wr)->remote_qpn; 2627 wqe->send.avid = ah->qplib_ah.id; 2628 } 2629 switch (wr->opcode) { 2630 case IB_WR_SEND: 2631 wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND; 2632 break; 2633 case IB_WR_SEND_WITH_IMM: 2634 wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM; 2635 wqe->send.imm_data = be32_to_cpu(wr->ex.imm_data); 2636 break; 2637 case IB_WR_SEND_WITH_INV: 2638 wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV; 2639 wqe->send.inv_key = wr->ex.invalidate_rkey; 2640 break; 2641 default: 2642 return -EINVAL; 2643 } 2644 if (wr->send_flags & IB_SEND_SIGNALED) 2645 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2646 if (wr->send_flags & IB_SEND_FENCE) 2647 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 2648 if (wr->send_flags & IB_SEND_SOLICITED) 2649 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; 2650 if (wr->send_flags & IB_SEND_INLINE) 2651 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_INLINE; 2652 2653 return 0; 2654 } 2655 2656 static int bnxt_re_build_rdma_wqe(const struct ib_send_wr *wr, 2657 struct bnxt_qplib_swqe *wqe) 2658 { 2659 switch (wr->opcode) { 2660 case IB_WR_RDMA_WRITE: 2661 wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE; 2662 break; 2663 case IB_WR_RDMA_WRITE_WITH_IMM: 2664 wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM; 2665 wqe->rdma.imm_data = be32_to_cpu(wr->ex.imm_data); 2666 break; 2667 case IB_WR_RDMA_READ: 2668 wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_READ; 2669 wqe->rdma.inv_key = wr->ex.invalidate_rkey; 2670 break; 2671 default: 2672 return -EINVAL; 2673 } 2674 wqe->rdma.remote_va = rdma_wr(wr)->remote_addr; 2675 wqe->rdma.r_key = rdma_wr(wr)->rkey; 2676 if (wr->send_flags & IB_SEND_SIGNALED) 2677 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2678 if (wr->send_flags & IB_SEND_FENCE) 2679 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 2680 if (wr->send_flags & IB_SEND_SOLICITED) 2681 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; 2682 if (wr->send_flags & IB_SEND_INLINE) 2683 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_INLINE; 2684 2685 return 0; 2686 } 2687 2688 static int bnxt_re_build_atomic_wqe(const struct ib_send_wr *wr, 2689 struct bnxt_qplib_swqe *wqe) 2690 { 2691 switch (wr->opcode) { 2692 case IB_WR_ATOMIC_CMP_AND_SWP: 2693 wqe->type = BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP; 2694 wqe->atomic.cmp_data = atomic_wr(wr)->compare_add; 2695 wqe->atomic.swap_data = atomic_wr(wr)->swap; 2696 break; 2697 case IB_WR_ATOMIC_FETCH_AND_ADD: 2698 wqe->type = BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD; 2699 wqe->atomic.cmp_data = atomic_wr(wr)->compare_add; 2700 break; 2701 default: 2702 return -EINVAL; 2703 } 2704 wqe->atomic.remote_va = atomic_wr(wr)->remote_addr; 2705 wqe->atomic.r_key = atomic_wr(wr)->rkey; 2706 if (wr->send_flags & IB_SEND_SIGNALED) 2707 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2708 if (wr->send_flags & IB_SEND_FENCE) 2709 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 2710 if (wr->send_flags & IB_SEND_SOLICITED) 2711 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; 2712 return 0; 2713 } 2714 2715 static int bnxt_re_build_inv_wqe(const struct ib_send_wr *wr, 2716 struct bnxt_qplib_swqe *wqe) 2717 { 2718 wqe->type = BNXT_QPLIB_SWQE_TYPE_LOCAL_INV; 2719 wqe->local_inv.inv_l_key = wr->ex.invalidate_rkey; 2720 2721 if (wr->send_flags & IB_SEND_SIGNALED) 2722 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2723 if (wr->send_flags & IB_SEND_SOLICITED) 2724 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; 2725 2726 return 0; 2727 } 2728 2729 static int bnxt_re_build_reg_wqe(const struct ib_reg_wr *wr, 2730 struct bnxt_qplib_swqe *wqe) 2731 { 2732 struct bnxt_re_mr *mr = container_of(wr->mr, struct bnxt_re_mr, ib_mr); 2733 struct bnxt_qplib_frpl *qplib_frpl = &mr->qplib_frpl; 2734 int access = wr->access; 2735 2736 wqe->frmr.pbl_ptr = (__le64 *)qplib_frpl->hwq.pbl_ptr[0]; 2737 wqe->frmr.pbl_dma_ptr = qplib_frpl->hwq.pbl_dma_ptr[0]; 2738 wqe->frmr.page_list = mr->pages; 2739 wqe->frmr.page_list_len = mr->npages; 2740 wqe->frmr.levels = qplib_frpl->hwq.level; 2741 wqe->type = BNXT_QPLIB_SWQE_TYPE_REG_MR; 2742 2743 if (wr->wr.send_flags & IB_SEND_SIGNALED) 2744 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2745 2746 if (access & IB_ACCESS_LOCAL_WRITE) 2747 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE; 2748 if (access & IB_ACCESS_REMOTE_READ) 2749 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_READ; 2750 if (access & IB_ACCESS_REMOTE_WRITE) 2751 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_WRITE; 2752 if (access & IB_ACCESS_REMOTE_ATOMIC) 2753 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_ATOMIC; 2754 if (access & IB_ACCESS_MW_BIND) 2755 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_WINDOW_BIND; 2756 2757 wqe->frmr.l_key = wr->key; 2758 wqe->frmr.length = wr->mr->length; 2759 wqe->frmr.pbl_pg_sz_log = ilog2(PAGE_SIZE >> PAGE_SHIFT_4K); 2760 wqe->frmr.pg_sz_log = ilog2(wr->mr->page_size >> PAGE_SHIFT_4K); 2761 wqe->frmr.va = wr->mr->iova; 2762 return 0; 2763 } 2764 2765 static int bnxt_re_copy_inline_data(struct bnxt_re_dev *rdev, 2766 const struct ib_send_wr *wr, 2767 struct bnxt_qplib_swqe *wqe) 2768 { 2769 /* Copy the inline data to the data field */ 2770 u8 *in_data; 2771 u32 i, sge_len; 2772 void *sge_addr; 2773 2774 in_data = wqe->inline_data; 2775 for (i = 0; i < wr->num_sge; i++) { 2776 sge_addr = (void *)(unsigned long) 2777 wr->sg_list[i].addr; 2778 sge_len = wr->sg_list[i].length; 2779 2780 if ((sge_len + wqe->inline_len) > 2781 BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH) { 2782 ibdev_err(&rdev->ibdev, 2783 "Inline data size requested > supported value"); 2784 return -EINVAL; 2785 } 2786 sge_len = wr->sg_list[i].length; 2787 2788 memcpy(in_data, sge_addr, sge_len); 2789 in_data += wr->sg_list[i].length; 2790 wqe->inline_len += wr->sg_list[i].length; 2791 } 2792 return wqe->inline_len; 2793 } 2794 2795 static int bnxt_re_copy_wr_payload(struct bnxt_re_dev *rdev, 2796 const struct ib_send_wr *wr, 2797 struct bnxt_qplib_swqe *wqe) 2798 { 2799 int payload_sz = 0; 2800 2801 if (wr->send_flags & IB_SEND_INLINE) 2802 payload_sz = bnxt_re_copy_inline_data(rdev, wr, wqe); 2803 else 2804 payload_sz = bnxt_re_build_sgl(wr->sg_list, wqe->sg_list, 2805 wqe->num_sge); 2806 2807 return payload_sz; 2808 } 2809 2810 static void bnxt_ud_qp_hw_stall_workaround(struct bnxt_re_qp *qp) 2811 { 2812 if ((qp->ib_qp.qp_type == IB_QPT_UD || 2813 qp->ib_qp.qp_type == IB_QPT_GSI || 2814 qp->ib_qp.qp_type == IB_QPT_RAW_ETHERTYPE) && 2815 qp->qplib_qp.wqe_cnt == BNXT_RE_UD_QP_HW_STALL) { 2816 int qp_attr_mask; 2817 struct ib_qp_attr qp_attr; 2818 2819 qp_attr_mask = IB_QP_STATE; 2820 qp_attr.qp_state = IB_QPS_RTS; 2821 bnxt_re_modify_qp(&qp->ib_qp, &qp_attr, qp_attr_mask, NULL); 2822 qp->qplib_qp.wqe_cnt = 0; 2823 } 2824 } 2825 2826 static int bnxt_re_post_send_shadow_qp(struct bnxt_re_dev *rdev, 2827 struct bnxt_re_qp *qp, 2828 const struct ib_send_wr *wr) 2829 { 2830 int rc = 0, payload_sz = 0; 2831 unsigned long flags; 2832 2833 spin_lock_irqsave(&qp->sq_lock, flags); 2834 while (wr) { 2835 struct bnxt_qplib_swqe wqe = {}; 2836 2837 /* Common */ 2838 wqe.num_sge = wr->num_sge; 2839 if (wr->num_sge > qp->qplib_qp.sq.max_sge) { 2840 ibdev_err(&rdev->ibdev, 2841 "Limit exceeded for Send SGEs"); 2842 rc = -EINVAL; 2843 goto bad; 2844 } 2845 2846 payload_sz = bnxt_re_copy_wr_payload(qp->rdev, wr, &wqe); 2847 if (payload_sz < 0) { 2848 rc = -EINVAL; 2849 goto bad; 2850 } 2851 wqe.wr_id = wr->wr_id; 2852 2853 wqe.type = BNXT_QPLIB_SWQE_TYPE_SEND; 2854 2855 rc = bnxt_re_build_send_wqe(qp, wr, &wqe); 2856 if (!rc) 2857 rc = bnxt_qplib_post_send(&qp->qplib_qp, &wqe); 2858 bad: 2859 if (rc) { 2860 ibdev_err(&rdev->ibdev, 2861 "Post send failed opcode = %#x rc = %d", 2862 wr->opcode, rc); 2863 break; 2864 } 2865 wr = wr->next; 2866 } 2867 bnxt_qplib_post_send_db(&qp->qplib_qp); 2868 if (!bnxt_qplib_is_chip_gen_p5_p7(qp->rdev->chip_ctx)) 2869 bnxt_ud_qp_hw_stall_workaround(qp); 2870 spin_unlock_irqrestore(&qp->sq_lock, flags); 2871 return rc; 2872 } 2873 2874 static void bnxt_re_legacy_set_uc_fence(struct bnxt_qplib_swqe *wqe) 2875 { 2876 /* Need unconditional fence for non-wire memory opcode 2877 * to work as expected. 2878 */ 2879 if (wqe->type == BNXT_QPLIB_SWQE_TYPE_LOCAL_INV || 2880 wqe->type == BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR || 2881 wqe->type == BNXT_QPLIB_SWQE_TYPE_REG_MR || 2882 wqe->type == BNXT_QPLIB_SWQE_TYPE_BIND_MW) 2883 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 2884 } 2885 2886 int bnxt_re_post_send(struct ib_qp *ib_qp, const struct ib_send_wr *wr, 2887 const struct ib_send_wr **bad_wr) 2888 { 2889 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 2890 struct bnxt_qplib_swqe wqe; 2891 int rc = 0, payload_sz = 0; 2892 unsigned long flags; 2893 2894 spin_lock_irqsave(&qp->sq_lock, flags); 2895 while (wr) { 2896 /* House keeping */ 2897 memset(&wqe, 0, sizeof(wqe)); 2898 2899 /* Common */ 2900 wqe.num_sge = wr->num_sge; 2901 if (wr->num_sge > qp->qplib_qp.sq.max_sge) { 2902 ibdev_err(&qp->rdev->ibdev, 2903 "Limit exceeded for Send SGEs"); 2904 rc = -EINVAL; 2905 goto bad; 2906 } 2907 2908 payload_sz = bnxt_re_copy_wr_payload(qp->rdev, wr, &wqe); 2909 if (payload_sz < 0) { 2910 rc = -EINVAL; 2911 goto bad; 2912 } 2913 wqe.wr_id = wr->wr_id; 2914 2915 switch (wr->opcode) { 2916 case IB_WR_SEND: 2917 case IB_WR_SEND_WITH_IMM: 2918 if (qp->qplib_qp.type == CMDQ_CREATE_QP1_TYPE_GSI) { 2919 rc = bnxt_re_build_qp1_send_v2(qp, wr, &wqe, 2920 payload_sz); 2921 if (rc) 2922 goto bad; 2923 wqe.rawqp1.lflags |= 2924 SQ_SEND_RAWETH_QP1_LFLAGS_ROCE_CRC; 2925 } 2926 switch (wr->send_flags) { 2927 case IB_SEND_IP_CSUM: 2928 wqe.rawqp1.lflags |= 2929 SQ_SEND_RAWETH_QP1_LFLAGS_IP_CHKSUM; 2930 break; 2931 default: 2932 break; 2933 } 2934 fallthrough; 2935 case IB_WR_SEND_WITH_INV: 2936 rc = bnxt_re_build_send_wqe(qp, wr, &wqe); 2937 break; 2938 case IB_WR_RDMA_WRITE: 2939 case IB_WR_RDMA_WRITE_WITH_IMM: 2940 case IB_WR_RDMA_READ: 2941 rc = bnxt_re_build_rdma_wqe(wr, &wqe); 2942 break; 2943 case IB_WR_ATOMIC_CMP_AND_SWP: 2944 case IB_WR_ATOMIC_FETCH_AND_ADD: 2945 rc = bnxt_re_build_atomic_wqe(wr, &wqe); 2946 break; 2947 case IB_WR_RDMA_READ_WITH_INV: 2948 ibdev_err(&qp->rdev->ibdev, 2949 "RDMA Read with Invalidate is not supported"); 2950 rc = -EINVAL; 2951 goto bad; 2952 case IB_WR_LOCAL_INV: 2953 rc = bnxt_re_build_inv_wqe(wr, &wqe); 2954 break; 2955 case IB_WR_REG_MR: 2956 rc = bnxt_re_build_reg_wqe(reg_wr(wr), &wqe); 2957 break; 2958 default: 2959 /* Unsupported WRs */ 2960 ibdev_err(&qp->rdev->ibdev, 2961 "WR (%#x) is not supported", wr->opcode); 2962 rc = -EINVAL; 2963 goto bad; 2964 } 2965 if (!rc) { 2966 if (!bnxt_qplib_is_chip_gen_p5_p7(qp->rdev->chip_ctx)) 2967 bnxt_re_legacy_set_uc_fence(&wqe); 2968 rc = bnxt_qplib_post_send(&qp->qplib_qp, &wqe); 2969 } 2970 bad: 2971 if (rc) { 2972 ibdev_err(&qp->rdev->ibdev, 2973 "post_send failed op:%#x qps = %#x rc = %d\n", 2974 wr->opcode, qp->qplib_qp.state, rc); 2975 *bad_wr = wr; 2976 break; 2977 } 2978 wr = wr->next; 2979 } 2980 bnxt_qplib_post_send_db(&qp->qplib_qp); 2981 if (!bnxt_qplib_is_chip_gen_p5_p7(qp->rdev->chip_ctx)) 2982 bnxt_ud_qp_hw_stall_workaround(qp); 2983 spin_unlock_irqrestore(&qp->sq_lock, flags); 2984 2985 return rc; 2986 } 2987 2988 static int bnxt_re_post_recv_shadow_qp(struct bnxt_re_dev *rdev, 2989 struct bnxt_re_qp *qp, 2990 const struct ib_recv_wr *wr) 2991 { 2992 struct bnxt_qplib_swqe wqe; 2993 int rc = 0; 2994 2995 while (wr) { 2996 /* House keeping */ 2997 memset(&wqe, 0, sizeof(wqe)); 2998 2999 /* Common */ 3000 wqe.num_sge = wr->num_sge; 3001 if (wr->num_sge > qp->qplib_qp.rq.max_sge) { 3002 ibdev_err(&rdev->ibdev, 3003 "Limit exceeded for Receive SGEs"); 3004 rc = -EINVAL; 3005 break; 3006 } 3007 bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, wr->num_sge); 3008 wqe.wr_id = wr->wr_id; 3009 wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; 3010 3011 rc = bnxt_qplib_post_recv(&qp->qplib_qp, &wqe); 3012 if (rc) 3013 break; 3014 3015 wr = wr->next; 3016 } 3017 if (!rc) 3018 bnxt_qplib_post_recv_db(&qp->qplib_qp); 3019 return rc; 3020 } 3021 3022 int bnxt_re_post_recv(struct ib_qp *ib_qp, const struct ib_recv_wr *wr, 3023 const struct ib_recv_wr **bad_wr) 3024 { 3025 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 3026 struct bnxt_qplib_swqe wqe; 3027 int rc = 0, payload_sz = 0; 3028 unsigned long flags; 3029 u32 count = 0; 3030 3031 spin_lock_irqsave(&qp->rq_lock, flags); 3032 while (wr) { 3033 /* House keeping */ 3034 memset(&wqe, 0, sizeof(wqe)); 3035 3036 /* Common */ 3037 wqe.num_sge = wr->num_sge; 3038 if (wr->num_sge > qp->qplib_qp.rq.max_sge) { 3039 ibdev_err(&qp->rdev->ibdev, 3040 "Limit exceeded for Receive SGEs"); 3041 rc = -EINVAL; 3042 *bad_wr = wr; 3043 break; 3044 } 3045 3046 payload_sz = bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, 3047 wr->num_sge); 3048 wqe.wr_id = wr->wr_id; 3049 wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; 3050 3051 if (ib_qp->qp_type == IB_QPT_GSI && 3052 qp->qplib_qp.type != CMDQ_CREATE_QP_TYPE_GSI) 3053 rc = bnxt_re_build_qp1_shadow_qp_recv(qp, wr, &wqe, 3054 payload_sz); 3055 if (!rc) 3056 rc = bnxt_qplib_post_recv(&qp->qplib_qp, &wqe); 3057 if (rc) { 3058 *bad_wr = wr; 3059 break; 3060 } 3061 3062 /* Ring DB if the RQEs posted reaches a threshold value */ 3063 if (++count >= BNXT_RE_RQ_WQE_THRESHOLD) { 3064 bnxt_qplib_post_recv_db(&qp->qplib_qp); 3065 count = 0; 3066 } 3067 3068 wr = wr->next; 3069 } 3070 3071 if (count) 3072 bnxt_qplib_post_recv_db(&qp->qplib_qp); 3073 3074 spin_unlock_irqrestore(&qp->rq_lock, flags); 3075 3076 return rc; 3077 } 3078 3079 static struct bnxt_qplib_nq *bnxt_re_get_nq(struct bnxt_re_dev *rdev) 3080 { 3081 int min, indx; 3082 3083 mutex_lock(&rdev->nqr->load_lock); 3084 for (indx = 0, min = 0; indx < (rdev->nqr->num_msix - 1); indx++) { 3085 if (rdev->nqr->nq[min].load > rdev->nqr->nq[indx].load) 3086 min = indx; 3087 } 3088 rdev->nqr->nq[min].load++; 3089 mutex_unlock(&rdev->nqr->load_lock); 3090 3091 return &rdev->nqr->nq[min]; 3092 } 3093 3094 static void bnxt_re_put_nq(struct bnxt_re_dev *rdev, struct bnxt_qplib_nq *nq) 3095 { 3096 mutex_lock(&rdev->nqr->load_lock); 3097 nq->load--; 3098 mutex_unlock(&rdev->nqr->load_lock); 3099 } 3100 3101 /* Completion Queues */ 3102 int bnxt_re_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata) 3103 { 3104 struct bnxt_qplib_chip_ctx *cctx; 3105 struct bnxt_qplib_nq *nq; 3106 struct bnxt_re_dev *rdev; 3107 struct bnxt_re_cq *cq; 3108 3109 cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); 3110 rdev = cq->rdev; 3111 nq = cq->qplib_cq.nq; 3112 cctx = rdev->chip_ctx; 3113 3114 if (cctx->modes.toggle_bits & BNXT_QPLIB_CQ_TOGGLE_BIT) { 3115 free_page((unsigned long)cq->uctx_cq_page); 3116 hash_del(&cq->hash_entry); 3117 } 3118 bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq); 3119 3120 bnxt_re_put_nq(rdev, nq); 3121 ib_umem_release(cq->umem); 3122 3123 atomic_dec(&rdev->stats.res.cq_count); 3124 kfree(cq->cql); 3125 return 0; 3126 } 3127 3128 int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 3129 struct uverbs_attr_bundle *attrs) 3130 { 3131 struct bnxt_re_cq *cq = container_of(ibcq, struct bnxt_re_cq, ib_cq); 3132 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibcq->device, ibdev); 3133 struct ib_udata *udata = &attrs->driver_udata; 3134 struct bnxt_re_ucontext *uctx = 3135 rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 3136 struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr; 3137 struct bnxt_qplib_chip_ctx *cctx; 3138 int cqe = attr->cqe; 3139 int rc, entries; 3140 u32 active_cqs; 3141 3142 if (attr->flags) 3143 return -EOPNOTSUPP; 3144 3145 /* Validate CQ fields */ 3146 if (cqe < 1 || cqe > dev_attr->max_cq_wqes) { 3147 ibdev_err(&rdev->ibdev, "Failed to create CQ -max exceeded"); 3148 return -EINVAL; 3149 } 3150 3151 cq->rdev = rdev; 3152 cctx = rdev->chip_ctx; 3153 cq->qplib_cq.cq_handle = (u64)(unsigned long)(&cq->qplib_cq); 3154 3155 entries = bnxt_re_init_depth(cqe + 1, uctx); 3156 if (entries > dev_attr->max_cq_wqes + 1) 3157 entries = dev_attr->max_cq_wqes + 1; 3158 3159 cq->qplib_cq.sg_info.pgsize = PAGE_SIZE; 3160 cq->qplib_cq.sg_info.pgshft = PAGE_SHIFT; 3161 if (udata) { 3162 struct bnxt_re_cq_req req; 3163 if (ib_copy_from_udata(&req, udata, sizeof(req))) { 3164 rc = -EFAULT; 3165 goto fail; 3166 } 3167 3168 cq->umem = ib_umem_get(&rdev->ibdev, req.cq_va, 3169 entries * sizeof(struct cq_base), 3170 IB_ACCESS_LOCAL_WRITE); 3171 if (IS_ERR(cq->umem)) { 3172 rc = PTR_ERR(cq->umem); 3173 goto fail; 3174 } 3175 cq->qplib_cq.sg_info.umem = cq->umem; 3176 cq->qplib_cq.dpi = &uctx->dpi; 3177 } else { 3178 cq->max_cql = min_t(u32, entries, MAX_CQL_PER_POLL); 3179 cq->cql = kcalloc(cq->max_cql, sizeof(struct bnxt_qplib_cqe), 3180 GFP_KERNEL); 3181 if (!cq->cql) { 3182 rc = -ENOMEM; 3183 goto fail; 3184 } 3185 3186 cq->qplib_cq.dpi = &rdev->dpi_privileged; 3187 } 3188 cq->qplib_cq.max_wqe = entries; 3189 cq->qplib_cq.coalescing = &rdev->cq_coalescing; 3190 cq->qplib_cq.nq = bnxt_re_get_nq(rdev); 3191 cq->qplib_cq.cnq_hw_ring_id = cq->qplib_cq.nq->ring_id; 3192 3193 rc = bnxt_qplib_create_cq(&rdev->qplib_res, &cq->qplib_cq); 3194 if (rc) { 3195 ibdev_err(&rdev->ibdev, "Failed to create HW CQ"); 3196 goto fail; 3197 } 3198 3199 cq->ib_cq.cqe = entries; 3200 cq->cq_period = cq->qplib_cq.period; 3201 3202 active_cqs = atomic_inc_return(&rdev->stats.res.cq_count); 3203 if (active_cqs > rdev->stats.res.cq_watermark) 3204 rdev->stats.res.cq_watermark = active_cqs; 3205 spin_lock_init(&cq->cq_lock); 3206 3207 if (udata) { 3208 struct bnxt_re_cq_resp resp = {}; 3209 3210 if (cctx->modes.toggle_bits & BNXT_QPLIB_CQ_TOGGLE_BIT) { 3211 hash_add(rdev->cq_hash, &cq->hash_entry, cq->qplib_cq.id); 3212 /* Allocate a page */ 3213 cq->uctx_cq_page = (void *)get_zeroed_page(GFP_KERNEL); 3214 if (!cq->uctx_cq_page) { 3215 rc = -ENOMEM; 3216 goto c2fail; 3217 } 3218 resp.comp_mask |= BNXT_RE_CQ_TOGGLE_PAGE_SUPPORT; 3219 } 3220 resp.cqid = cq->qplib_cq.id; 3221 resp.tail = cq->qplib_cq.hwq.cons; 3222 resp.phase = cq->qplib_cq.period; 3223 resp.rsvd = 0; 3224 rc = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); 3225 if (rc) { 3226 ibdev_err(&rdev->ibdev, "Failed to copy CQ udata"); 3227 bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq); 3228 goto free_mem; 3229 } 3230 } 3231 3232 return 0; 3233 3234 free_mem: 3235 free_page((unsigned long)cq->uctx_cq_page); 3236 c2fail: 3237 ib_umem_release(cq->umem); 3238 fail: 3239 kfree(cq->cql); 3240 return rc; 3241 } 3242 3243 static void bnxt_re_resize_cq_complete(struct bnxt_re_cq *cq) 3244 { 3245 struct bnxt_re_dev *rdev = cq->rdev; 3246 3247 bnxt_qplib_resize_cq_complete(&rdev->qplib_res, &cq->qplib_cq); 3248 3249 cq->qplib_cq.max_wqe = cq->resize_cqe; 3250 if (cq->resize_umem) { 3251 ib_umem_release(cq->umem); 3252 cq->umem = cq->resize_umem; 3253 cq->resize_umem = NULL; 3254 cq->resize_cqe = 0; 3255 } 3256 } 3257 3258 int bnxt_re_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata) 3259 { 3260 struct bnxt_qplib_sg_info sg_info = {}; 3261 struct bnxt_qplib_dpi *orig_dpi = NULL; 3262 struct bnxt_qplib_dev_attr *dev_attr; 3263 struct bnxt_re_ucontext *uctx = NULL; 3264 struct bnxt_re_resize_cq_req req; 3265 struct bnxt_re_dev *rdev; 3266 struct bnxt_re_cq *cq; 3267 int rc, entries; 3268 3269 cq = container_of(ibcq, struct bnxt_re_cq, ib_cq); 3270 rdev = cq->rdev; 3271 dev_attr = rdev->dev_attr; 3272 if (!ibcq->uobject) { 3273 ibdev_err(&rdev->ibdev, "Kernel CQ Resize not supported"); 3274 return -EOPNOTSUPP; 3275 } 3276 3277 if (cq->resize_umem) { 3278 ibdev_err(&rdev->ibdev, "Resize CQ %#x failed - Busy", 3279 cq->qplib_cq.id); 3280 return -EBUSY; 3281 } 3282 3283 /* Check the requested cq depth out of supported depth */ 3284 if (cqe < 1 || cqe > dev_attr->max_cq_wqes) { 3285 ibdev_err(&rdev->ibdev, "Resize CQ %#x failed - out of range cqe %d", 3286 cq->qplib_cq.id, cqe); 3287 return -EINVAL; 3288 } 3289 3290 uctx = rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 3291 entries = bnxt_re_init_depth(cqe + 1, uctx); 3292 if (entries > dev_attr->max_cq_wqes + 1) 3293 entries = dev_attr->max_cq_wqes + 1; 3294 3295 /* uverbs consumer */ 3296 if (ib_copy_from_udata(&req, udata, sizeof(req))) { 3297 rc = -EFAULT; 3298 goto fail; 3299 } 3300 3301 cq->resize_umem = ib_umem_get(&rdev->ibdev, req.cq_va, 3302 entries * sizeof(struct cq_base), 3303 IB_ACCESS_LOCAL_WRITE); 3304 if (IS_ERR(cq->resize_umem)) { 3305 rc = PTR_ERR(cq->resize_umem); 3306 ibdev_err(&rdev->ibdev, "%s: ib_umem_get failed! rc = %pe\n", 3307 __func__, cq->resize_umem); 3308 cq->resize_umem = NULL; 3309 goto fail; 3310 } 3311 cq->resize_cqe = entries; 3312 memcpy(&sg_info, &cq->qplib_cq.sg_info, sizeof(sg_info)); 3313 orig_dpi = cq->qplib_cq.dpi; 3314 3315 cq->qplib_cq.sg_info.umem = cq->resize_umem; 3316 cq->qplib_cq.sg_info.pgsize = PAGE_SIZE; 3317 cq->qplib_cq.sg_info.pgshft = PAGE_SHIFT; 3318 cq->qplib_cq.dpi = &uctx->dpi; 3319 3320 rc = bnxt_qplib_resize_cq(&rdev->qplib_res, &cq->qplib_cq, entries); 3321 if (rc) { 3322 ibdev_err(&rdev->ibdev, "Resize HW CQ %#x failed!", 3323 cq->qplib_cq.id); 3324 goto fail; 3325 } 3326 3327 cq->ib_cq.cqe = cq->resize_cqe; 3328 atomic_inc(&rdev->stats.res.resize_count); 3329 3330 return 0; 3331 3332 fail: 3333 if (cq->resize_umem) { 3334 ib_umem_release(cq->resize_umem); 3335 cq->resize_umem = NULL; 3336 cq->resize_cqe = 0; 3337 memcpy(&cq->qplib_cq.sg_info, &sg_info, sizeof(sg_info)); 3338 cq->qplib_cq.dpi = orig_dpi; 3339 } 3340 return rc; 3341 } 3342 3343 static u8 __req_to_ib_wc_status(u8 qstatus) 3344 { 3345 switch (qstatus) { 3346 case CQ_REQ_STATUS_OK: 3347 return IB_WC_SUCCESS; 3348 case CQ_REQ_STATUS_BAD_RESPONSE_ERR: 3349 return IB_WC_BAD_RESP_ERR; 3350 case CQ_REQ_STATUS_LOCAL_LENGTH_ERR: 3351 return IB_WC_LOC_LEN_ERR; 3352 case CQ_REQ_STATUS_LOCAL_QP_OPERATION_ERR: 3353 return IB_WC_LOC_QP_OP_ERR; 3354 case CQ_REQ_STATUS_LOCAL_PROTECTION_ERR: 3355 return IB_WC_LOC_PROT_ERR; 3356 case CQ_REQ_STATUS_MEMORY_MGT_OPERATION_ERR: 3357 return IB_WC_GENERAL_ERR; 3358 case CQ_REQ_STATUS_REMOTE_INVALID_REQUEST_ERR: 3359 return IB_WC_REM_INV_REQ_ERR; 3360 case CQ_REQ_STATUS_REMOTE_ACCESS_ERR: 3361 return IB_WC_REM_ACCESS_ERR; 3362 case CQ_REQ_STATUS_REMOTE_OPERATION_ERR: 3363 return IB_WC_REM_OP_ERR; 3364 case CQ_REQ_STATUS_RNR_NAK_RETRY_CNT_ERR: 3365 return IB_WC_RNR_RETRY_EXC_ERR; 3366 case CQ_REQ_STATUS_TRANSPORT_RETRY_CNT_ERR: 3367 return IB_WC_RETRY_EXC_ERR; 3368 case CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR: 3369 return IB_WC_WR_FLUSH_ERR; 3370 default: 3371 return IB_WC_GENERAL_ERR; 3372 } 3373 return 0; 3374 } 3375 3376 static u8 __rawqp1_to_ib_wc_status(u8 qstatus) 3377 { 3378 switch (qstatus) { 3379 case CQ_RES_RAWETH_QP1_STATUS_OK: 3380 return IB_WC_SUCCESS; 3381 case CQ_RES_RAWETH_QP1_STATUS_LOCAL_ACCESS_ERROR: 3382 return IB_WC_LOC_ACCESS_ERR; 3383 case CQ_RES_RAWETH_QP1_STATUS_HW_LOCAL_LENGTH_ERR: 3384 return IB_WC_LOC_LEN_ERR; 3385 case CQ_RES_RAWETH_QP1_STATUS_LOCAL_PROTECTION_ERR: 3386 return IB_WC_LOC_PROT_ERR; 3387 case CQ_RES_RAWETH_QP1_STATUS_LOCAL_QP_OPERATION_ERR: 3388 return IB_WC_LOC_QP_OP_ERR; 3389 case CQ_RES_RAWETH_QP1_STATUS_MEMORY_MGT_OPERATION_ERR: 3390 return IB_WC_GENERAL_ERR; 3391 case CQ_RES_RAWETH_QP1_STATUS_WORK_REQUEST_FLUSHED_ERR: 3392 return IB_WC_WR_FLUSH_ERR; 3393 case CQ_RES_RAWETH_QP1_STATUS_HW_FLUSH_ERR: 3394 return IB_WC_WR_FLUSH_ERR; 3395 default: 3396 return IB_WC_GENERAL_ERR; 3397 } 3398 } 3399 3400 static u8 __rc_to_ib_wc_status(u8 qstatus) 3401 { 3402 switch (qstatus) { 3403 case CQ_RES_RC_STATUS_OK: 3404 return IB_WC_SUCCESS; 3405 case CQ_RES_RC_STATUS_LOCAL_ACCESS_ERROR: 3406 return IB_WC_LOC_ACCESS_ERR; 3407 case CQ_RES_RC_STATUS_LOCAL_LENGTH_ERR: 3408 return IB_WC_LOC_LEN_ERR; 3409 case CQ_RES_RC_STATUS_LOCAL_PROTECTION_ERR: 3410 return IB_WC_LOC_PROT_ERR; 3411 case CQ_RES_RC_STATUS_LOCAL_QP_OPERATION_ERR: 3412 return IB_WC_LOC_QP_OP_ERR; 3413 case CQ_RES_RC_STATUS_MEMORY_MGT_OPERATION_ERR: 3414 return IB_WC_GENERAL_ERR; 3415 case CQ_RES_RC_STATUS_REMOTE_INVALID_REQUEST_ERR: 3416 return IB_WC_REM_INV_REQ_ERR; 3417 case CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR: 3418 return IB_WC_WR_FLUSH_ERR; 3419 case CQ_RES_RC_STATUS_HW_FLUSH_ERR: 3420 return IB_WC_WR_FLUSH_ERR; 3421 default: 3422 return IB_WC_GENERAL_ERR; 3423 } 3424 } 3425 3426 static void bnxt_re_process_req_wc(struct ib_wc *wc, struct bnxt_qplib_cqe *cqe) 3427 { 3428 switch (cqe->type) { 3429 case BNXT_QPLIB_SWQE_TYPE_SEND: 3430 wc->opcode = IB_WC_SEND; 3431 break; 3432 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM: 3433 wc->opcode = IB_WC_SEND; 3434 wc->wc_flags |= IB_WC_WITH_IMM; 3435 break; 3436 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV: 3437 wc->opcode = IB_WC_SEND; 3438 wc->wc_flags |= IB_WC_WITH_INVALIDATE; 3439 break; 3440 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE: 3441 wc->opcode = IB_WC_RDMA_WRITE; 3442 break; 3443 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM: 3444 wc->opcode = IB_WC_RDMA_WRITE; 3445 wc->wc_flags |= IB_WC_WITH_IMM; 3446 break; 3447 case BNXT_QPLIB_SWQE_TYPE_RDMA_READ: 3448 wc->opcode = IB_WC_RDMA_READ; 3449 break; 3450 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP: 3451 wc->opcode = IB_WC_COMP_SWAP; 3452 break; 3453 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD: 3454 wc->opcode = IB_WC_FETCH_ADD; 3455 break; 3456 case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV: 3457 wc->opcode = IB_WC_LOCAL_INV; 3458 break; 3459 case BNXT_QPLIB_SWQE_TYPE_REG_MR: 3460 wc->opcode = IB_WC_REG_MR; 3461 break; 3462 default: 3463 wc->opcode = IB_WC_SEND; 3464 break; 3465 } 3466 3467 wc->status = __req_to_ib_wc_status(cqe->status); 3468 } 3469 3470 static int bnxt_re_check_packet_type(u16 raweth_qp1_flags, 3471 u16 raweth_qp1_flags2) 3472 { 3473 bool is_ipv6 = false, is_ipv4 = false; 3474 3475 /* raweth_qp1_flags Bit 9-6 indicates itype */ 3476 if ((raweth_qp1_flags & CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS_ITYPE_ROCE) 3477 != CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS_ITYPE_ROCE) 3478 return -1; 3479 3480 if (raweth_qp1_flags2 & 3481 CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_IP_CS_CALC && 3482 raweth_qp1_flags2 & 3483 CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_L4_CS_CALC) { 3484 /* raweth_qp1_flags2 Bit 8 indicates ip_type. 0-v4 1 - v6 */ 3485 (raweth_qp1_flags2 & 3486 CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_IP_TYPE) ? 3487 (is_ipv6 = true) : (is_ipv4 = true); 3488 return ((is_ipv6) ? 3489 BNXT_RE_ROCEV2_IPV6_PACKET : 3490 BNXT_RE_ROCEV2_IPV4_PACKET); 3491 } else { 3492 return BNXT_RE_ROCE_V1_PACKET; 3493 } 3494 } 3495 3496 static int bnxt_re_to_ib_nw_type(int nw_type) 3497 { 3498 u8 nw_hdr_type = 0xFF; 3499 3500 switch (nw_type) { 3501 case BNXT_RE_ROCE_V1_PACKET: 3502 nw_hdr_type = RDMA_NETWORK_ROCE_V1; 3503 break; 3504 case BNXT_RE_ROCEV2_IPV4_PACKET: 3505 nw_hdr_type = RDMA_NETWORK_IPV4; 3506 break; 3507 case BNXT_RE_ROCEV2_IPV6_PACKET: 3508 nw_hdr_type = RDMA_NETWORK_IPV6; 3509 break; 3510 } 3511 return nw_hdr_type; 3512 } 3513 3514 static bool bnxt_re_is_loopback_packet(struct bnxt_re_dev *rdev, 3515 void *rq_hdr_buf) 3516 { 3517 u8 *tmp_buf = NULL; 3518 struct ethhdr *eth_hdr; 3519 u16 eth_type; 3520 bool rc = false; 3521 3522 tmp_buf = (u8 *)rq_hdr_buf; 3523 /* 3524 * If dest mac is not same as I/F mac, this could be a 3525 * loopback address or multicast address, check whether 3526 * it is a loopback packet 3527 */ 3528 if (!ether_addr_equal(tmp_buf, rdev->netdev->dev_addr)) { 3529 tmp_buf += 4; 3530 /* Check the ether type */ 3531 eth_hdr = (struct ethhdr *)tmp_buf; 3532 eth_type = ntohs(eth_hdr->h_proto); 3533 switch (eth_type) { 3534 case ETH_P_IBOE: 3535 rc = true; 3536 break; 3537 case ETH_P_IP: 3538 case ETH_P_IPV6: { 3539 u32 len; 3540 struct udphdr *udp_hdr; 3541 3542 len = (eth_type == ETH_P_IP ? sizeof(struct iphdr) : 3543 sizeof(struct ipv6hdr)); 3544 tmp_buf += sizeof(struct ethhdr) + len; 3545 udp_hdr = (struct udphdr *)tmp_buf; 3546 if (ntohs(udp_hdr->dest) == 3547 ROCE_V2_UDP_DPORT) 3548 rc = true; 3549 break; 3550 } 3551 default: 3552 break; 3553 } 3554 } 3555 3556 return rc; 3557 } 3558 3559 static int bnxt_re_process_raw_qp_pkt_rx(struct bnxt_re_qp *gsi_qp, 3560 struct bnxt_qplib_cqe *cqe) 3561 { 3562 struct bnxt_re_dev *rdev = gsi_qp->rdev; 3563 struct bnxt_re_sqp_entries *sqp_entry = NULL; 3564 struct bnxt_re_qp *gsi_sqp = rdev->gsi_ctx.gsi_sqp; 3565 dma_addr_t shrq_hdr_buf_map; 3566 struct ib_sge s_sge[2] = {}; 3567 struct ib_sge r_sge[2] = {}; 3568 struct bnxt_re_ah *gsi_sah; 3569 struct ib_recv_wr rwr = {}; 3570 dma_addr_t rq_hdr_buf_map; 3571 struct ib_ud_wr udwr = {}; 3572 struct ib_send_wr *swr; 3573 u32 skip_bytes = 0; 3574 int pkt_type = 0; 3575 void *rq_hdr_buf; 3576 u32 offset = 0; 3577 u32 tbl_idx; 3578 int rc; 3579 3580 swr = &udwr.wr; 3581 tbl_idx = cqe->wr_id; 3582 3583 rq_hdr_buf = gsi_qp->qplib_qp.rq_hdr_buf + 3584 (tbl_idx * gsi_qp->qplib_qp.rq_hdr_buf_size); 3585 rq_hdr_buf_map = bnxt_qplib_get_qp_buf_from_index(&gsi_qp->qplib_qp, 3586 tbl_idx); 3587 3588 /* Shadow QP header buffer */ 3589 shrq_hdr_buf_map = bnxt_qplib_get_qp_buf_from_index(&gsi_qp->qplib_qp, 3590 tbl_idx); 3591 sqp_entry = &rdev->gsi_ctx.sqp_tbl[tbl_idx]; 3592 3593 /* Store this cqe */ 3594 memcpy(&sqp_entry->cqe, cqe, sizeof(struct bnxt_qplib_cqe)); 3595 sqp_entry->qp1_qp = gsi_qp; 3596 3597 /* Find packet type from the cqe */ 3598 3599 pkt_type = bnxt_re_check_packet_type(cqe->raweth_qp1_flags, 3600 cqe->raweth_qp1_flags2); 3601 if (pkt_type < 0) { 3602 ibdev_err(&rdev->ibdev, "Invalid packet\n"); 3603 return -EINVAL; 3604 } 3605 3606 /* Adjust the offset for the user buffer and post in the rq */ 3607 3608 if (pkt_type == BNXT_RE_ROCEV2_IPV4_PACKET) 3609 offset = 20; 3610 3611 /* 3612 * QP1 loopback packet has 4 bytes of internal header before 3613 * ether header. Skip these four bytes. 3614 */ 3615 if (bnxt_re_is_loopback_packet(rdev, rq_hdr_buf)) 3616 skip_bytes = 4; 3617 3618 /* First send SGE . Skip the ether header*/ 3619 s_sge[0].addr = rq_hdr_buf_map + BNXT_QPLIB_MAX_QP1_RQ_ETH_HDR_SIZE 3620 + skip_bytes; 3621 s_sge[0].lkey = 0xFFFFFFFF; 3622 s_sge[0].length = offset ? BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV4 : 3623 BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6; 3624 3625 /* Second Send SGE */ 3626 s_sge[1].addr = s_sge[0].addr + s_sge[0].length + 3627 BNXT_QPLIB_MAX_QP1_RQ_BDETH_HDR_SIZE; 3628 if (pkt_type != BNXT_RE_ROCE_V1_PACKET) 3629 s_sge[1].addr += 8; 3630 s_sge[1].lkey = 0xFFFFFFFF; 3631 s_sge[1].length = 256; 3632 3633 /* First recv SGE */ 3634 3635 r_sge[0].addr = shrq_hdr_buf_map; 3636 r_sge[0].lkey = 0xFFFFFFFF; 3637 r_sge[0].length = 40; 3638 3639 r_sge[1].addr = sqp_entry->sge.addr + offset; 3640 r_sge[1].lkey = sqp_entry->sge.lkey; 3641 r_sge[1].length = BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6 + 256 - offset; 3642 3643 /* Create receive work request */ 3644 rwr.num_sge = 2; 3645 rwr.sg_list = r_sge; 3646 rwr.wr_id = tbl_idx; 3647 rwr.next = NULL; 3648 3649 rc = bnxt_re_post_recv_shadow_qp(rdev, gsi_sqp, &rwr); 3650 if (rc) { 3651 ibdev_err(&rdev->ibdev, 3652 "Failed to post Rx buffers to shadow QP"); 3653 return -ENOMEM; 3654 } 3655 3656 swr->num_sge = 2; 3657 swr->sg_list = s_sge; 3658 swr->wr_id = tbl_idx; 3659 swr->opcode = IB_WR_SEND; 3660 swr->next = NULL; 3661 gsi_sah = rdev->gsi_ctx.gsi_sah; 3662 udwr.ah = &gsi_sah->ib_ah; 3663 udwr.remote_qpn = gsi_sqp->qplib_qp.id; 3664 udwr.remote_qkey = gsi_sqp->qplib_qp.qkey; 3665 3666 /* post data received in the send queue */ 3667 return bnxt_re_post_send_shadow_qp(rdev, gsi_sqp, swr); 3668 } 3669 3670 static void bnxt_re_process_res_rawqp1_wc(struct ib_wc *wc, 3671 struct bnxt_qplib_cqe *cqe) 3672 { 3673 wc->opcode = IB_WC_RECV; 3674 wc->status = __rawqp1_to_ib_wc_status(cqe->status); 3675 wc->wc_flags |= IB_WC_GRH; 3676 } 3677 3678 static bool bnxt_re_check_if_vlan_valid(struct bnxt_re_dev *rdev, 3679 u16 vlan_id) 3680 { 3681 /* 3682 * Check if the vlan is configured in the host. If not configured, it 3683 * can be a transparent VLAN. So dont report the vlan id. 3684 */ 3685 if (!__vlan_find_dev_deep_rcu(rdev->netdev, 3686 htons(ETH_P_8021Q), vlan_id)) 3687 return false; 3688 return true; 3689 } 3690 3691 static bool bnxt_re_is_vlan_pkt(struct bnxt_qplib_cqe *orig_cqe, 3692 u16 *vid, u8 *sl) 3693 { 3694 bool ret = false; 3695 u32 metadata; 3696 u16 tpid; 3697 3698 metadata = orig_cqe->raweth_qp1_metadata; 3699 if (orig_cqe->raweth_qp1_flags2 & 3700 CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_META_FORMAT_VLAN) { 3701 tpid = ((metadata & 3702 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_TPID_MASK) >> 3703 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_TPID_SFT); 3704 if (tpid == ETH_P_8021Q) { 3705 *vid = metadata & 3706 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_VID_MASK; 3707 *sl = (metadata & 3708 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_PRI_MASK) >> 3709 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_PRI_SFT; 3710 ret = true; 3711 } 3712 } 3713 3714 return ret; 3715 } 3716 3717 static void bnxt_re_process_res_rc_wc(struct ib_wc *wc, 3718 struct bnxt_qplib_cqe *cqe) 3719 { 3720 wc->opcode = IB_WC_RECV; 3721 wc->status = __rc_to_ib_wc_status(cqe->status); 3722 3723 if (cqe->flags & CQ_RES_RC_FLAGS_IMM) 3724 wc->wc_flags |= IB_WC_WITH_IMM; 3725 if (cqe->flags & CQ_RES_RC_FLAGS_INV) 3726 wc->wc_flags |= IB_WC_WITH_INVALIDATE; 3727 if ((cqe->flags & (CQ_RES_RC_FLAGS_RDMA | CQ_RES_RC_FLAGS_IMM)) == 3728 (CQ_RES_RC_FLAGS_RDMA | CQ_RES_RC_FLAGS_IMM)) 3729 wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; 3730 } 3731 3732 static void bnxt_re_process_res_shadow_qp_wc(struct bnxt_re_qp *gsi_sqp, 3733 struct ib_wc *wc, 3734 struct bnxt_qplib_cqe *cqe) 3735 { 3736 struct bnxt_re_dev *rdev = gsi_sqp->rdev; 3737 struct bnxt_re_qp *gsi_qp = NULL; 3738 struct bnxt_qplib_cqe *orig_cqe = NULL; 3739 struct bnxt_re_sqp_entries *sqp_entry = NULL; 3740 int nw_type; 3741 u32 tbl_idx; 3742 u16 vlan_id; 3743 u8 sl; 3744 3745 tbl_idx = cqe->wr_id; 3746 3747 sqp_entry = &rdev->gsi_ctx.sqp_tbl[tbl_idx]; 3748 gsi_qp = sqp_entry->qp1_qp; 3749 orig_cqe = &sqp_entry->cqe; 3750 3751 wc->wr_id = sqp_entry->wrid; 3752 wc->byte_len = orig_cqe->length; 3753 wc->qp = &gsi_qp->ib_qp; 3754 3755 wc->ex.imm_data = cpu_to_be32(orig_cqe->immdata); 3756 wc->src_qp = orig_cqe->src_qp; 3757 memcpy(wc->smac, orig_cqe->smac, ETH_ALEN); 3758 if (bnxt_re_is_vlan_pkt(orig_cqe, &vlan_id, &sl)) { 3759 if (bnxt_re_check_if_vlan_valid(rdev, vlan_id)) { 3760 wc->vlan_id = vlan_id; 3761 wc->sl = sl; 3762 wc->wc_flags |= IB_WC_WITH_VLAN; 3763 } 3764 } 3765 wc->port_num = 1; 3766 wc->vendor_err = orig_cqe->status; 3767 3768 wc->opcode = IB_WC_RECV; 3769 wc->status = __rawqp1_to_ib_wc_status(orig_cqe->status); 3770 wc->wc_flags |= IB_WC_GRH; 3771 3772 nw_type = bnxt_re_check_packet_type(orig_cqe->raweth_qp1_flags, 3773 orig_cqe->raweth_qp1_flags2); 3774 if (nw_type >= 0) { 3775 wc->network_hdr_type = bnxt_re_to_ib_nw_type(nw_type); 3776 wc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE; 3777 } 3778 } 3779 3780 static void bnxt_re_process_res_ud_wc(struct bnxt_re_qp *qp, 3781 struct ib_wc *wc, 3782 struct bnxt_qplib_cqe *cqe) 3783 { 3784 struct bnxt_re_dev *rdev; 3785 u16 vlan_id = 0; 3786 u8 nw_type; 3787 3788 rdev = qp->rdev; 3789 wc->opcode = IB_WC_RECV; 3790 wc->status = __rc_to_ib_wc_status(cqe->status); 3791 3792 if (cqe->flags & CQ_RES_UD_FLAGS_IMM) 3793 wc->wc_flags |= IB_WC_WITH_IMM; 3794 /* report only on GSI QP for Thor */ 3795 if (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_GSI) { 3796 wc->wc_flags |= IB_WC_GRH; 3797 memcpy(wc->smac, cqe->smac, ETH_ALEN); 3798 wc->wc_flags |= IB_WC_WITH_SMAC; 3799 if (cqe->flags & CQ_RES_UD_FLAGS_META_FORMAT_VLAN) { 3800 vlan_id = (cqe->cfa_meta & 0xFFF); 3801 } 3802 /* Mark only if vlan_id is non zero */ 3803 if (vlan_id && bnxt_re_check_if_vlan_valid(rdev, vlan_id)) { 3804 wc->vlan_id = vlan_id; 3805 wc->wc_flags |= IB_WC_WITH_VLAN; 3806 } 3807 nw_type = (cqe->flags & CQ_RES_UD_FLAGS_ROCE_IP_VER_MASK) >> 3808 CQ_RES_UD_FLAGS_ROCE_IP_VER_SFT; 3809 wc->network_hdr_type = bnxt_re_to_ib_nw_type(nw_type); 3810 wc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE; 3811 } 3812 3813 } 3814 3815 static int send_phantom_wqe(struct bnxt_re_qp *qp) 3816 { 3817 struct bnxt_qplib_qp *lib_qp = &qp->qplib_qp; 3818 unsigned long flags; 3819 int rc; 3820 3821 spin_lock_irqsave(&qp->sq_lock, flags); 3822 3823 rc = bnxt_re_bind_fence_mw(lib_qp); 3824 if (!rc) { 3825 lib_qp->sq.phantom_wqe_cnt++; 3826 ibdev_dbg(&qp->rdev->ibdev, 3827 "qp %#x sq->prod %#x sw_prod %#x phantom_wqe_cnt %d\n", 3828 lib_qp->id, lib_qp->sq.hwq.prod, 3829 HWQ_CMP(lib_qp->sq.hwq.prod, &lib_qp->sq.hwq), 3830 lib_qp->sq.phantom_wqe_cnt); 3831 } 3832 3833 spin_unlock_irqrestore(&qp->sq_lock, flags); 3834 return rc; 3835 } 3836 3837 int bnxt_re_poll_cq(struct ib_cq *ib_cq, int num_entries, struct ib_wc *wc) 3838 { 3839 struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); 3840 struct bnxt_re_qp *qp, *sh_qp; 3841 struct bnxt_qplib_cqe *cqe; 3842 int i, ncqe, budget; 3843 struct bnxt_qplib_q *sq; 3844 struct bnxt_qplib_qp *lib_qp; 3845 u32 tbl_idx; 3846 struct bnxt_re_sqp_entries *sqp_entry = NULL; 3847 unsigned long flags; 3848 3849 /* User CQ; the only processing we do is to 3850 * complete any pending CQ resize operation. 3851 */ 3852 if (cq->umem) { 3853 if (cq->resize_umem) 3854 bnxt_re_resize_cq_complete(cq); 3855 return 0; 3856 } 3857 3858 spin_lock_irqsave(&cq->cq_lock, flags); 3859 budget = min_t(u32, num_entries, cq->max_cql); 3860 num_entries = budget; 3861 if (!cq->cql) { 3862 ibdev_err(&cq->rdev->ibdev, "POLL CQ : no CQL to use"); 3863 goto exit; 3864 } 3865 cqe = &cq->cql[0]; 3866 while (budget) { 3867 lib_qp = NULL; 3868 ncqe = bnxt_qplib_poll_cq(&cq->qplib_cq, cqe, budget, &lib_qp); 3869 if (lib_qp) { 3870 sq = &lib_qp->sq; 3871 if (sq->send_phantom) { 3872 qp = container_of(lib_qp, 3873 struct bnxt_re_qp, qplib_qp); 3874 if (send_phantom_wqe(qp) == -ENOMEM) 3875 ibdev_err(&cq->rdev->ibdev, 3876 "Phantom failed! Scheduled to send again\n"); 3877 else 3878 sq->send_phantom = false; 3879 } 3880 } 3881 if (ncqe < budget) 3882 ncqe += bnxt_qplib_process_flush_list(&cq->qplib_cq, 3883 cqe + ncqe, 3884 budget - ncqe); 3885 3886 if (!ncqe) 3887 break; 3888 3889 for (i = 0; i < ncqe; i++, cqe++) { 3890 /* Transcribe each qplib_wqe back to ib_wc */ 3891 memset(wc, 0, sizeof(*wc)); 3892 3893 wc->wr_id = cqe->wr_id; 3894 wc->byte_len = cqe->length; 3895 qp = container_of 3896 ((struct bnxt_qplib_qp *) 3897 (unsigned long)(cqe->qp_handle), 3898 struct bnxt_re_qp, qplib_qp); 3899 wc->qp = &qp->ib_qp; 3900 if (cqe->flags & CQ_RES_RC_FLAGS_IMM) 3901 wc->ex.imm_data = cpu_to_be32(cqe->immdata); 3902 else 3903 wc->ex.invalidate_rkey = cqe->invrkey; 3904 wc->src_qp = cqe->src_qp; 3905 memcpy(wc->smac, cqe->smac, ETH_ALEN); 3906 wc->port_num = 1; 3907 wc->vendor_err = cqe->status; 3908 3909 switch (cqe->opcode) { 3910 case CQ_BASE_CQE_TYPE_REQ: 3911 sh_qp = qp->rdev->gsi_ctx.gsi_sqp; 3912 if (sh_qp && 3913 qp->qplib_qp.id == sh_qp->qplib_qp.id) { 3914 /* Handle this completion with 3915 * the stored completion 3916 */ 3917 memset(wc, 0, sizeof(*wc)); 3918 continue; 3919 } 3920 bnxt_re_process_req_wc(wc, cqe); 3921 break; 3922 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1: 3923 if (!cqe->status) { 3924 int rc = 0; 3925 3926 rc = bnxt_re_process_raw_qp_pkt_rx 3927 (qp, cqe); 3928 if (!rc) { 3929 memset(wc, 0, sizeof(*wc)); 3930 continue; 3931 } 3932 cqe->status = -1; 3933 } 3934 /* Errors need not be looped back. 3935 * But change the wr_id to the one 3936 * stored in the table 3937 */ 3938 tbl_idx = cqe->wr_id; 3939 sqp_entry = &cq->rdev->gsi_ctx.sqp_tbl[tbl_idx]; 3940 wc->wr_id = sqp_entry->wrid; 3941 bnxt_re_process_res_rawqp1_wc(wc, cqe); 3942 break; 3943 case CQ_BASE_CQE_TYPE_RES_RC: 3944 bnxt_re_process_res_rc_wc(wc, cqe); 3945 break; 3946 case CQ_BASE_CQE_TYPE_RES_UD: 3947 sh_qp = qp->rdev->gsi_ctx.gsi_sqp; 3948 if (sh_qp && 3949 qp->qplib_qp.id == sh_qp->qplib_qp.id) { 3950 /* Handle this completion with 3951 * the stored completion 3952 */ 3953 if (cqe->status) { 3954 continue; 3955 } else { 3956 bnxt_re_process_res_shadow_qp_wc 3957 (qp, wc, cqe); 3958 break; 3959 } 3960 } 3961 bnxt_re_process_res_ud_wc(qp, wc, cqe); 3962 break; 3963 default: 3964 ibdev_err(&cq->rdev->ibdev, 3965 "POLL CQ : type 0x%x not handled", 3966 cqe->opcode); 3967 continue; 3968 } 3969 wc++; 3970 budget--; 3971 } 3972 } 3973 exit: 3974 spin_unlock_irqrestore(&cq->cq_lock, flags); 3975 return num_entries - budget; 3976 } 3977 3978 int bnxt_re_req_notify_cq(struct ib_cq *ib_cq, 3979 enum ib_cq_notify_flags ib_cqn_flags) 3980 { 3981 struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); 3982 int type = 0, rc = 0; 3983 unsigned long flags; 3984 3985 spin_lock_irqsave(&cq->cq_lock, flags); 3986 /* Trigger on the very next completion */ 3987 if (ib_cqn_flags & IB_CQ_NEXT_COMP) 3988 type = DBC_DBC_TYPE_CQ_ARMALL; 3989 /* Trigger on the next solicited completion */ 3990 else if (ib_cqn_flags & IB_CQ_SOLICITED) 3991 type = DBC_DBC_TYPE_CQ_ARMSE; 3992 3993 /* Poll to see if there are missed events */ 3994 if ((ib_cqn_flags & IB_CQ_REPORT_MISSED_EVENTS) && 3995 !(bnxt_qplib_is_cq_empty(&cq->qplib_cq))) { 3996 rc = 1; 3997 goto exit; 3998 } 3999 bnxt_qplib_req_notify_cq(&cq->qplib_cq, type); 4000 4001 exit: 4002 spin_unlock_irqrestore(&cq->cq_lock, flags); 4003 return rc; 4004 } 4005 4006 /* Memory Regions */ 4007 struct ib_mr *bnxt_re_get_dma_mr(struct ib_pd *ib_pd, int mr_access_flags) 4008 { 4009 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4010 struct bnxt_re_dev *rdev = pd->rdev; 4011 struct bnxt_re_mr *mr; 4012 u32 active_mrs; 4013 int rc; 4014 4015 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 4016 if (!mr) 4017 return ERR_PTR(-ENOMEM); 4018 4019 mr->rdev = rdev; 4020 mr->qplib_mr.pd = &pd->qplib_pd; 4021 mr->qplib_mr.access_flags = __from_ib_access_flags(mr_access_flags); 4022 mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; 4023 4024 if (mr_access_flags & IB_ACCESS_RELAXED_ORDERING) 4025 bnxt_re_check_and_set_relaxed_ordering(rdev, &mr->qplib_mr); 4026 4027 /* Allocate and register 0 as the address */ 4028 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); 4029 if (rc) 4030 goto fail; 4031 4032 mr->qplib_mr.hwq.level = PBL_LVL_MAX; 4033 mr->qplib_mr.total_size = -1; /* Infinte length */ 4034 rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &mr->qplib_mr, NULL, 0, 4035 PAGE_SIZE); 4036 if (rc) 4037 goto fail_mr; 4038 4039 mr->ib_mr.lkey = mr->qplib_mr.lkey; 4040 if (mr_access_flags & (IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ | 4041 IB_ACCESS_REMOTE_ATOMIC)) 4042 mr->ib_mr.rkey = mr->ib_mr.lkey; 4043 active_mrs = atomic_inc_return(&rdev->stats.res.mr_count); 4044 if (active_mrs > rdev->stats.res.mr_watermark) 4045 rdev->stats.res.mr_watermark = active_mrs; 4046 4047 return &mr->ib_mr; 4048 4049 fail_mr: 4050 bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 4051 fail: 4052 kfree(mr); 4053 return ERR_PTR(rc); 4054 } 4055 4056 int bnxt_re_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata) 4057 { 4058 struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); 4059 struct bnxt_re_dev *rdev = mr->rdev; 4060 int rc; 4061 4062 rc = bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 4063 if (rc) { 4064 ibdev_err(&rdev->ibdev, "Dereg MR failed: %#x\n", rc); 4065 return rc; 4066 } 4067 4068 if (mr->pages) { 4069 rc = bnxt_qplib_free_fast_reg_page_list(&rdev->qplib_res, 4070 &mr->qplib_frpl); 4071 kfree(mr->pages); 4072 mr->npages = 0; 4073 mr->pages = NULL; 4074 } 4075 ib_umem_release(mr->ib_umem); 4076 4077 kfree(mr); 4078 atomic_dec(&rdev->stats.res.mr_count); 4079 return rc; 4080 } 4081 4082 static int bnxt_re_set_page(struct ib_mr *ib_mr, u64 addr) 4083 { 4084 struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); 4085 4086 if (unlikely(mr->npages == mr->qplib_frpl.max_pg_ptrs)) 4087 return -ENOMEM; 4088 4089 mr->pages[mr->npages++] = addr; 4090 return 0; 4091 } 4092 4093 int bnxt_re_map_mr_sg(struct ib_mr *ib_mr, struct scatterlist *sg, int sg_nents, 4094 unsigned int *sg_offset) 4095 { 4096 struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); 4097 4098 mr->npages = 0; 4099 return ib_sg_to_pages(ib_mr, sg, sg_nents, sg_offset, bnxt_re_set_page); 4100 } 4101 4102 struct ib_mr *bnxt_re_alloc_mr(struct ib_pd *ib_pd, enum ib_mr_type type, 4103 u32 max_num_sg) 4104 { 4105 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4106 struct bnxt_re_dev *rdev = pd->rdev; 4107 struct bnxt_re_mr *mr = NULL; 4108 u32 active_mrs; 4109 int rc; 4110 4111 if (type != IB_MR_TYPE_MEM_REG) { 4112 ibdev_dbg(&rdev->ibdev, "MR type 0x%x not supported", type); 4113 return ERR_PTR(-EINVAL); 4114 } 4115 if (max_num_sg > MAX_PBL_LVL_1_PGS) 4116 return ERR_PTR(-EINVAL); 4117 4118 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 4119 if (!mr) 4120 return ERR_PTR(-ENOMEM); 4121 4122 mr->rdev = rdev; 4123 mr->qplib_mr.pd = &pd->qplib_pd; 4124 mr->qplib_mr.access_flags = BNXT_QPLIB_FR_PMR; 4125 mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; 4126 4127 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); 4128 if (rc) 4129 goto bail; 4130 4131 mr->ib_mr.lkey = mr->qplib_mr.lkey; 4132 mr->ib_mr.rkey = mr->ib_mr.lkey; 4133 4134 mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL); 4135 if (!mr->pages) { 4136 rc = -ENOMEM; 4137 goto fail; 4138 } 4139 rc = bnxt_qplib_alloc_fast_reg_page_list(&rdev->qplib_res, 4140 &mr->qplib_frpl, max_num_sg); 4141 if (rc) { 4142 ibdev_err(&rdev->ibdev, 4143 "Failed to allocate HW FR page list"); 4144 goto fail_mr; 4145 } 4146 4147 active_mrs = atomic_inc_return(&rdev->stats.res.mr_count); 4148 if (active_mrs > rdev->stats.res.mr_watermark) 4149 rdev->stats.res.mr_watermark = active_mrs; 4150 return &mr->ib_mr; 4151 4152 fail_mr: 4153 kfree(mr->pages); 4154 fail: 4155 bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 4156 bail: 4157 kfree(mr); 4158 return ERR_PTR(rc); 4159 } 4160 4161 struct ib_mw *bnxt_re_alloc_mw(struct ib_pd *ib_pd, enum ib_mw_type type, 4162 struct ib_udata *udata) 4163 { 4164 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4165 struct bnxt_re_dev *rdev = pd->rdev; 4166 struct bnxt_re_mw *mw; 4167 u32 active_mws; 4168 int rc; 4169 4170 mw = kzalloc(sizeof(*mw), GFP_KERNEL); 4171 if (!mw) 4172 return ERR_PTR(-ENOMEM); 4173 mw->rdev = rdev; 4174 mw->qplib_mw.pd = &pd->qplib_pd; 4175 4176 mw->qplib_mw.type = (type == IB_MW_TYPE_1 ? 4177 CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE1 : 4178 CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE2B); 4179 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mw->qplib_mw); 4180 if (rc) { 4181 ibdev_err(&rdev->ibdev, "Allocate MW failed!"); 4182 goto fail; 4183 } 4184 mw->ib_mw.rkey = mw->qplib_mw.rkey; 4185 4186 active_mws = atomic_inc_return(&rdev->stats.res.mw_count); 4187 if (active_mws > rdev->stats.res.mw_watermark) 4188 rdev->stats.res.mw_watermark = active_mws; 4189 return &mw->ib_mw; 4190 4191 fail: 4192 kfree(mw); 4193 return ERR_PTR(rc); 4194 } 4195 4196 int bnxt_re_dealloc_mw(struct ib_mw *ib_mw) 4197 { 4198 struct bnxt_re_mw *mw = container_of(ib_mw, struct bnxt_re_mw, ib_mw); 4199 struct bnxt_re_dev *rdev = mw->rdev; 4200 int rc; 4201 4202 rc = bnxt_qplib_free_mrw(&rdev->qplib_res, &mw->qplib_mw); 4203 if (rc) { 4204 ibdev_err(&rdev->ibdev, "Free MW failed: %#x\n", rc); 4205 return rc; 4206 } 4207 4208 kfree(mw); 4209 atomic_dec(&rdev->stats.res.mw_count); 4210 return rc; 4211 } 4212 4213 static struct ib_mr *__bnxt_re_user_reg_mr(struct ib_pd *ib_pd, u64 length, u64 virt_addr, 4214 int mr_access_flags, struct ib_umem *umem) 4215 { 4216 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4217 struct bnxt_re_dev *rdev = pd->rdev; 4218 unsigned long page_size; 4219 struct bnxt_re_mr *mr; 4220 int umem_pgs, rc; 4221 u32 active_mrs; 4222 4223 if (length > BNXT_RE_MAX_MR_SIZE) { 4224 ibdev_err(&rdev->ibdev, "MR Size: %lld > Max supported:%lld\n", 4225 length, BNXT_RE_MAX_MR_SIZE); 4226 return ERR_PTR(-ENOMEM); 4227 } 4228 4229 page_size = ib_umem_find_best_pgsz(umem, BNXT_RE_PAGE_SIZE_SUPPORTED, virt_addr); 4230 if (!page_size) { 4231 ibdev_err(&rdev->ibdev, "umem page size unsupported!"); 4232 return ERR_PTR(-EINVAL); 4233 } 4234 4235 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 4236 if (!mr) 4237 return ERR_PTR(-ENOMEM); 4238 4239 mr->rdev = rdev; 4240 mr->qplib_mr.pd = &pd->qplib_pd; 4241 mr->qplib_mr.access_flags = __from_ib_access_flags(mr_access_flags); 4242 mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_MR; 4243 4244 if (!_is_alloc_mr_unified(rdev->dev_attr->dev_cap_flags)) { 4245 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); 4246 if (rc) { 4247 ibdev_err(&rdev->ibdev, "Failed to allocate MR rc = %d", rc); 4248 rc = -EIO; 4249 goto free_mr; 4250 } 4251 /* The fixed portion of the rkey is the same as the lkey */ 4252 mr->ib_mr.rkey = mr->qplib_mr.rkey; 4253 } else { 4254 mr->qplib_mr.flags = CMDQ_REGISTER_MR_FLAGS_ALLOC_MR; 4255 } 4256 mr->ib_umem = umem; 4257 mr->qplib_mr.va = virt_addr; 4258 mr->qplib_mr.total_size = length; 4259 4260 if (mr_access_flags & IB_ACCESS_RELAXED_ORDERING) 4261 bnxt_re_check_and_set_relaxed_ordering(rdev, &mr->qplib_mr); 4262 4263 umem_pgs = ib_umem_num_dma_blocks(umem, page_size); 4264 rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &mr->qplib_mr, umem, 4265 umem_pgs, page_size); 4266 if (rc) { 4267 ibdev_err(&rdev->ibdev, "Failed to register user MR - rc = %d\n", rc); 4268 rc = -EIO; 4269 goto free_mrw; 4270 } 4271 4272 mr->ib_mr.lkey = mr->qplib_mr.lkey; 4273 mr->ib_mr.rkey = mr->qplib_mr.lkey; 4274 active_mrs = atomic_inc_return(&rdev->stats.res.mr_count); 4275 if (active_mrs > rdev->stats.res.mr_watermark) 4276 rdev->stats.res.mr_watermark = active_mrs; 4277 4278 return &mr->ib_mr; 4279 4280 free_mrw: 4281 bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 4282 free_mr: 4283 kfree(mr); 4284 return ERR_PTR(rc); 4285 } 4286 4287 struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *ib_pd, u64 start, u64 length, 4288 u64 virt_addr, int mr_access_flags, 4289 struct ib_dmah *dmah, 4290 struct ib_udata *udata) 4291 { 4292 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4293 struct bnxt_re_dev *rdev = pd->rdev; 4294 struct ib_umem *umem; 4295 struct ib_mr *ib_mr; 4296 4297 if (dmah) 4298 return ERR_PTR(-EOPNOTSUPP); 4299 4300 umem = ib_umem_get(&rdev->ibdev, start, length, mr_access_flags); 4301 if (IS_ERR(umem)) 4302 return ERR_CAST(umem); 4303 4304 ib_mr = __bnxt_re_user_reg_mr(ib_pd, length, virt_addr, mr_access_flags, umem); 4305 if (IS_ERR(ib_mr)) 4306 ib_umem_release(umem); 4307 return ib_mr; 4308 } 4309 4310 struct ib_mr *bnxt_re_reg_user_mr_dmabuf(struct ib_pd *ib_pd, u64 start, 4311 u64 length, u64 virt_addr, int fd, 4312 int mr_access_flags, 4313 struct ib_dmah *dmah, 4314 struct uverbs_attr_bundle *attrs) 4315 { 4316 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4317 struct bnxt_re_dev *rdev = pd->rdev; 4318 struct ib_umem_dmabuf *umem_dmabuf; 4319 struct ib_umem *umem; 4320 struct ib_mr *ib_mr; 4321 4322 if (dmah) 4323 return ERR_PTR(-EOPNOTSUPP); 4324 4325 umem_dmabuf = ib_umem_dmabuf_get_pinned(&rdev->ibdev, start, length, 4326 fd, mr_access_flags); 4327 if (IS_ERR(umem_dmabuf)) 4328 return ERR_CAST(umem_dmabuf); 4329 4330 umem = &umem_dmabuf->umem; 4331 4332 ib_mr = __bnxt_re_user_reg_mr(ib_pd, length, virt_addr, mr_access_flags, umem); 4333 if (IS_ERR(ib_mr)) 4334 ib_umem_release(umem); 4335 return ib_mr; 4336 } 4337 4338 int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata) 4339 { 4340 struct ib_device *ibdev = ctx->device; 4341 struct bnxt_re_ucontext *uctx = 4342 container_of(ctx, struct bnxt_re_ucontext, ib_uctx); 4343 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 4344 struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr; 4345 struct bnxt_re_user_mmap_entry *entry; 4346 struct bnxt_re_uctx_resp resp = {}; 4347 struct bnxt_re_uctx_req ureq = {}; 4348 u32 chip_met_rev_num = 0; 4349 int rc; 4350 4351 ibdev_dbg(ibdev, "ABI version requested %u", ibdev->ops.uverbs_abi_ver); 4352 4353 if (ibdev->ops.uverbs_abi_ver != BNXT_RE_ABI_VERSION) { 4354 ibdev_dbg(ibdev, " is different from the device %d ", 4355 BNXT_RE_ABI_VERSION); 4356 return -EPERM; 4357 } 4358 4359 uctx->rdev = rdev; 4360 4361 uctx->shpg = (void *)__get_free_page(GFP_KERNEL); 4362 if (!uctx->shpg) { 4363 rc = -ENOMEM; 4364 goto fail; 4365 } 4366 spin_lock_init(&uctx->sh_lock); 4367 4368 resp.comp_mask = BNXT_RE_UCNTX_CMASK_HAVE_CCTX; 4369 chip_met_rev_num = rdev->chip_ctx->chip_num; 4370 chip_met_rev_num |= ((u32)rdev->chip_ctx->chip_rev & 0xFF) << 4371 BNXT_RE_CHIP_ID0_CHIP_REV_SFT; 4372 chip_met_rev_num |= ((u32)rdev->chip_ctx->chip_metal & 0xFF) << 4373 BNXT_RE_CHIP_ID0_CHIP_MET_SFT; 4374 resp.chip_id0 = chip_met_rev_num; 4375 /*Temp, Use xa_alloc instead */ 4376 resp.dev_id = rdev->en_dev->pdev->devfn; 4377 resp.max_qp = rdev->qplib_ctx.qpc_count; 4378 resp.pg_size = PAGE_SIZE; 4379 resp.cqe_sz = sizeof(struct cq_base); 4380 resp.max_cqd = dev_attr->max_cq_wqes; 4381 4382 if (rdev->chip_ctx->modes.db_push) 4383 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_WC_DPI_ENABLED; 4384 4385 entry = bnxt_re_mmap_entry_insert(uctx, 0, BNXT_RE_MMAP_SH_PAGE, NULL); 4386 if (!entry) { 4387 rc = -ENOMEM; 4388 goto cfail; 4389 } 4390 uctx->shpage_mmap = &entry->rdma_entry; 4391 if (rdev->pacing.dbr_pacing) 4392 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_DBR_PACING_ENABLED; 4393 4394 if (_is_host_msn_table(rdev->qplib_res.dattr->dev_cap_flags2)) 4395 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_MSN_TABLE_ENABLED; 4396 4397 if (udata->inlen >= sizeof(ureq)) { 4398 rc = ib_copy_from_udata(&ureq, udata, min(udata->inlen, sizeof(ureq))); 4399 if (rc) 4400 goto cfail; 4401 if (ureq.comp_mask & BNXT_RE_COMP_MASK_REQ_UCNTX_POW2_SUPPORT) { 4402 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_POW2_DISABLED; 4403 uctx->cmask |= BNXT_RE_UCNTX_CAP_POW2_DISABLED; 4404 } 4405 if (ureq.comp_mask & BNXT_RE_COMP_MASK_REQ_UCNTX_VAR_WQE_SUPPORT) { 4406 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_HAVE_MODE; 4407 resp.mode = rdev->chip_ctx->modes.wqe_mode; 4408 if (resp.mode == BNXT_QPLIB_WQE_MODE_VARIABLE) 4409 uctx->cmask |= BNXT_RE_UCNTX_CAP_VAR_WQE_ENABLED; 4410 } 4411 } 4412 4413 rc = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp))); 4414 if (rc) { 4415 ibdev_err(ibdev, "Failed to copy user context"); 4416 rc = -EFAULT; 4417 goto cfail; 4418 } 4419 4420 return 0; 4421 cfail: 4422 free_page((unsigned long)uctx->shpg); 4423 uctx->shpg = NULL; 4424 fail: 4425 return rc; 4426 } 4427 4428 void bnxt_re_dealloc_ucontext(struct ib_ucontext *ib_uctx) 4429 { 4430 struct bnxt_re_ucontext *uctx = container_of(ib_uctx, 4431 struct bnxt_re_ucontext, 4432 ib_uctx); 4433 4434 struct bnxt_re_dev *rdev = uctx->rdev; 4435 4436 rdma_user_mmap_entry_remove(uctx->shpage_mmap); 4437 uctx->shpage_mmap = NULL; 4438 if (uctx->shpg) 4439 free_page((unsigned long)uctx->shpg); 4440 4441 if (uctx->dpi.dbr) { 4442 /* Free DPI only if this is the first PD allocated by the 4443 * application and mark the context dpi as NULL 4444 */ 4445 bnxt_qplib_dealloc_dpi(&rdev->qplib_res, &uctx->dpi); 4446 uctx->dpi.dbr = NULL; 4447 } 4448 } 4449 4450 static int bnxt_re_setup_vnic(struct bnxt_re_dev *rdev, struct bnxt_re_qp *qp) 4451 { 4452 int rc; 4453 4454 rc = bnxt_re_hwrm_alloc_vnic(rdev); 4455 if (rc) 4456 return rc; 4457 4458 rc = bnxt_re_hwrm_cfg_vnic(rdev, qp->qplib_qp.id); 4459 if (rc) 4460 goto out_free_vnic; 4461 4462 return 0; 4463 out_free_vnic: 4464 bnxt_re_hwrm_free_vnic(rdev); 4465 return rc; 4466 } 4467 4468 struct ib_flow *bnxt_re_create_flow(struct ib_qp *ib_qp, 4469 struct ib_flow_attr *attr, 4470 struct ib_udata *udata) 4471 { 4472 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 4473 struct bnxt_re_dev *rdev = qp->rdev; 4474 struct bnxt_re_flow *flow; 4475 int rc; 4476 4477 if (attr->type != IB_FLOW_ATTR_SNIFFER || 4478 !rdev->rcfw.roce_mirror) 4479 return ERR_PTR(-EOPNOTSUPP); 4480 4481 mutex_lock(&rdev->qp_lock); 4482 if (rdev->sniffer_flow_created) { 4483 ibdev_err(&rdev->ibdev, "RoCE Mirroring is already Configured\n"); 4484 mutex_unlock(&rdev->qp_lock); 4485 return ERR_PTR(-EBUSY); 4486 } 4487 4488 flow = kzalloc(sizeof(*flow), GFP_KERNEL); 4489 if (!flow) { 4490 mutex_unlock(&rdev->qp_lock); 4491 return ERR_PTR(-ENOMEM); 4492 } 4493 4494 flow->rdev = rdev; 4495 4496 rc = bnxt_re_setup_vnic(rdev, qp); 4497 if (rc) 4498 goto out_free_flow; 4499 4500 rc = bnxt_qplib_create_flow(&rdev->qplib_res); 4501 if (rc) 4502 goto out_free_vnic; 4503 4504 rdev->sniffer_flow_created = 1; 4505 mutex_unlock(&rdev->qp_lock); 4506 4507 return &flow->ib_flow; 4508 4509 out_free_vnic: 4510 bnxt_re_hwrm_free_vnic(rdev); 4511 out_free_flow: 4512 mutex_unlock(&rdev->qp_lock); 4513 kfree(flow); 4514 return ERR_PTR(rc); 4515 } 4516 4517 int bnxt_re_destroy_flow(struct ib_flow *flow_id) 4518 { 4519 struct bnxt_re_flow *flow = 4520 container_of(flow_id, struct bnxt_re_flow, ib_flow); 4521 struct bnxt_re_dev *rdev = flow->rdev; 4522 int rc; 4523 4524 mutex_lock(&rdev->qp_lock); 4525 rc = bnxt_qplib_destroy_flow(&rdev->qplib_res); 4526 if (rc) 4527 ibdev_dbg(&rdev->ibdev, "failed to destroy_flow rc = %d\n", rc); 4528 rdev->sniffer_flow_created = 0; 4529 4530 bnxt_re_hwrm_free_vnic(rdev); 4531 mutex_unlock(&rdev->qp_lock); 4532 kfree(flow); 4533 4534 return rc; 4535 } 4536 4537 static struct bnxt_re_cq *bnxt_re_search_for_cq(struct bnxt_re_dev *rdev, u32 cq_id) 4538 { 4539 struct bnxt_re_cq *cq = NULL, *tmp_cq; 4540 4541 hash_for_each_possible(rdev->cq_hash, tmp_cq, hash_entry, cq_id) { 4542 if (tmp_cq->qplib_cq.id == cq_id) { 4543 cq = tmp_cq; 4544 break; 4545 } 4546 } 4547 return cq; 4548 } 4549 4550 static struct bnxt_re_srq *bnxt_re_search_for_srq(struct bnxt_re_dev *rdev, u32 srq_id) 4551 { 4552 struct bnxt_re_srq *srq = NULL, *tmp_srq; 4553 4554 hash_for_each_possible(rdev->srq_hash, tmp_srq, hash_entry, srq_id) { 4555 if (tmp_srq->qplib_srq.id == srq_id) { 4556 srq = tmp_srq; 4557 break; 4558 } 4559 } 4560 return srq; 4561 } 4562 4563 /* Helper function to mmap the virtual memory from user app */ 4564 int bnxt_re_mmap(struct ib_ucontext *ib_uctx, struct vm_area_struct *vma) 4565 { 4566 struct bnxt_re_ucontext *uctx = container_of(ib_uctx, 4567 struct bnxt_re_ucontext, 4568 ib_uctx); 4569 struct bnxt_re_user_mmap_entry *bnxt_entry; 4570 struct rdma_user_mmap_entry *rdma_entry; 4571 int ret = 0; 4572 u64 pfn; 4573 4574 rdma_entry = rdma_user_mmap_entry_get(&uctx->ib_uctx, vma); 4575 if (!rdma_entry) 4576 return -EINVAL; 4577 4578 bnxt_entry = container_of(rdma_entry, struct bnxt_re_user_mmap_entry, 4579 rdma_entry); 4580 4581 switch (bnxt_entry->mmap_flag) { 4582 case BNXT_RE_MMAP_WC_DB: 4583 pfn = bnxt_entry->mem_offset >> PAGE_SHIFT; 4584 ret = rdma_user_mmap_io(ib_uctx, vma, pfn, PAGE_SIZE, 4585 pgprot_writecombine(vma->vm_page_prot), 4586 rdma_entry); 4587 break; 4588 case BNXT_RE_MMAP_UC_DB: 4589 pfn = bnxt_entry->mem_offset >> PAGE_SHIFT; 4590 ret = rdma_user_mmap_io(ib_uctx, vma, pfn, PAGE_SIZE, 4591 pgprot_noncached(vma->vm_page_prot), 4592 rdma_entry); 4593 break; 4594 case BNXT_RE_MMAP_SH_PAGE: 4595 ret = vm_insert_page(vma, vma->vm_start, virt_to_page(uctx->shpg)); 4596 break; 4597 case BNXT_RE_MMAP_DBR_BAR: 4598 pfn = bnxt_entry->mem_offset >> PAGE_SHIFT; 4599 ret = rdma_user_mmap_io(ib_uctx, vma, pfn, PAGE_SIZE, 4600 pgprot_noncached(vma->vm_page_prot), 4601 rdma_entry); 4602 break; 4603 case BNXT_RE_MMAP_DBR_PAGE: 4604 case BNXT_RE_MMAP_TOGGLE_PAGE: 4605 /* Driver doesn't expect write access for user space */ 4606 if (vma->vm_flags & VM_WRITE) 4607 ret = -EFAULT; 4608 else 4609 ret = vm_insert_page(vma, vma->vm_start, 4610 virt_to_page((void *)bnxt_entry->mem_offset)); 4611 break; 4612 default: 4613 ret = -EINVAL; 4614 break; 4615 } 4616 4617 rdma_user_mmap_entry_put(rdma_entry); 4618 return ret; 4619 } 4620 4621 void bnxt_re_mmap_free(struct rdma_user_mmap_entry *rdma_entry) 4622 { 4623 struct bnxt_re_user_mmap_entry *bnxt_entry; 4624 4625 bnxt_entry = container_of(rdma_entry, struct bnxt_re_user_mmap_entry, 4626 rdma_entry); 4627 4628 kfree(bnxt_entry); 4629 } 4630 4631 int bnxt_re_process_mad(struct ib_device *ibdev, int mad_flags, 4632 u32 port_num, const struct ib_wc *in_wc, 4633 const struct ib_grh *in_grh, 4634 const struct ib_mad *in_mad, struct ib_mad *out_mad, 4635 size_t *out_mad_size, u16 *out_mad_pkey_index) 4636 { 4637 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 4638 struct ib_class_port_info cpi = {}; 4639 int ret = IB_MAD_RESULT_SUCCESS; 4640 int rc = 0; 4641 4642 if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT) 4643 return ret; 4644 4645 switch (in_mad->mad_hdr.attr_id) { 4646 case IB_PMA_CLASS_PORT_INFO: 4647 cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; 4648 memcpy((out_mad->data + 40), &cpi, sizeof(cpi)); 4649 break; 4650 case IB_PMA_PORT_COUNTERS_EXT: 4651 rc = bnxt_re_assign_pma_port_ext_counters(rdev, out_mad); 4652 break; 4653 case IB_PMA_PORT_COUNTERS: 4654 rc = bnxt_re_assign_pma_port_counters(rdev, out_mad); 4655 break; 4656 default: 4657 rc = -EINVAL; 4658 break; 4659 } 4660 if (rc) 4661 return IB_MAD_RESULT_FAILURE; 4662 ret |= IB_MAD_RESULT_REPLY; 4663 return ret; 4664 } 4665 4666 static int UVERBS_HANDLER(BNXT_RE_METHOD_NOTIFY_DRV)(struct uverbs_attr_bundle *attrs) 4667 { 4668 struct bnxt_re_ucontext *uctx; 4669 4670 uctx = container_of(ib_uverbs_get_ucontext(attrs), struct bnxt_re_ucontext, ib_uctx); 4671 bnxt_re_pacing_alert(uctx->rdev); 4672 return 0; 4673 } 4674 4675 static int UVERBS_HANDLER(BNXT_RE_METHOD_ALLOC_PAGE)(struct uverbs_attr_bundle *attrs) 4676 { 4677 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, BNXT_RE_ALLOC_PAGE_HANDLE); 4678 enum bnxt_re_alloc_page_type alloc_type; 4679 struct bnxt_re_user_mmap_entry *entry; 4680 enum bnxt_re_mmap_flag mmap_flag; 4681 struct bnxt_qplib_chip_ctx *cctx; 4682 struct bnxt_re_ucontext *uctx; 4683 struct bnxt_re_dev *rdev; 4684 u64 mmap_offset; 4685 u32 length; 4686 u32 dpi; 4687 u64 addr; 4688 int err; 4689 4690 uctx = container_of(ib_uverbs_get_ucontext(attrs), struct bnxt_re_ucontext, ib_uctx); 4691 if (IS_ERR(uctx)) 4692 return PTR_ERR(uctx); 4693 4694 err = uverbs_get_const(&alloc_type, attrs, BNXT_RE_ALLOC_PAGE_TYPE); 4695 if (err) 4696 return err; 4697 4698 rdev = uctx->rdev; 4699 cctx = rdev->chip_ctx; 4700 4701 switch (alloc_type) { 4702 case BNXT_RE_ALLOC_WC_PAGE: 4703 if (cctx->modes.db_push) { 4704 if (bnxt_qplib_alloc_dpi(&rdev->qplib_res, &uctx->wcdpi, 4705 uctx, BNXT_QPLIB_DPI_TYPE_WC)) 4706 return -ENOMEM; 4707 length = PAGE_SIZE; 4708 dpi = uctx->wcdpi.dpi; 4709 addr = (u64)uctx->wcdpi.umdbr; 4710 mmap_flag = BNXT_RE_MMAP_WC_DB; 4711 } else { 4712 return -EINVAL; 4713 } 4714 4715 break; 4716 case BNXT_RE_ALLOC_DBR_BAR_PAGE: 4717 length = PAGE_SIZE; 4718 addr = (u64)rdev->pacing.dbr_bar_addr; 4719 mmap_flag = BNXT_RE_MMAP_DBR_BAR; 4720 break; 4721 4722 case BNXT_RE_ALLOC_DBR_PAGE: 4723 length = PAGE_SIZE; 4724 addr = (u64)rdev->pacing.dbr_page; 4725 mmap_flag = BNXT_RE_MMAP_DBR_PAGE; 4726 break; 4727 4728 default: 4729 return -EOPNOTSUPP; 4730 } 4731 4732 entry = bnxt_re_mmap_entry_insert(uctx, addr, mmap_flag, &mmap_offset); 4733 if (!entry) 4734 return -ENOMEM; 4735 4736 uobj->object = entry; 4737 uverbs_finalize_uobj_create(attrs, BNXT_RE_ALLOC_PAGE_HANDLE); 4738 err = uverbs_copy_to(attrs, BNXT_RE_ALLOC_PAGE_MMAP_OFFSET, 4739 &mmap_offset, sizeof(mmap_offset)); 4740 if (err) 4741 return err; 4742 4743 err = uverbs_copy_to(attrs, BNXT_RE_ALLOC_PAGE_MMAP_LENGTH, 4744 &length, sizeof(length)); 4745 if (err) 4746 return err; 4747 4748 err = uverbs_copy_to(attrs, BNXT_RE_ALLOC_PAGE_DPI, 4749 &dpi, sizeof(dpi)); 4750 if (err) 4751 return err; 4752 4753 return 0; 4754 } 4755 4756 static int alloc_page_obj_cleanup(struct ib_uobject *uobject, 4757 enum rdma_remove_reason why, 4758 struct uverbs_attr_bundle *attrs) 4759 { 4760 struct bnxt_re_user_mmap_entry *entry = uobject->object; 4761 struct bnxt_re_ucontext *uctx = entry->uctx; 4762 4763 switch (entry->mmap_flag) { 4764 case BNXT_RE_MMAP_WC_DB: 4765 if (uctx && uctx->wcdpi.dbr) { 4766 struct bnxt_re_dev *rdev = uctx->rdev; 4767 4768 bnxt_qplib_dealloc_dpi(&rdev->qplib_res, &uctx->wcdpi); 4769 uctx->wcdpi.dbr = NULL; 4770 } 4771 break; 4772 case BNXT_RE_MMAP_DBR_BAR: 4773 case BNXT_RE_MMAP_DBR_PAGE: 4774 break; 4775 default: 4776 goto exit; 4777 } 4778 rdma_user_mmap_entry_remove(&entry->rdma_entry); 4779 exit: 4780 return 0; 4781 } 4782 4783 DECLARE_UVERBS_NAMED_METHOD(BNXT_RE_METHOD_ALLOC_PAGE, 4784 UVERBS_ATTR_IDR(BNXT_RE_ALLOC_PAGE_HANDLE, 4785 BNXT_RE_OBJECT_ALLOC_PAGE, 4786 UVERBS_ACCESS_NEW, 4787 UA_MANDATORY), 4788 UVERBS_ATTR_CONST_IN(BNXT_RE_ALLOC_PAGE_TYPE, 4789 enum bnxt_re_alloc_page_type, 4790 UA_MANDATORY), 4791 UVERBS_ATTR_PTR_OUT(BNXT_RE_ALLOC_PAGE_MMAP_OFFSET, 4792 UVERBS_ATTR_TYPE(u64), 4793 UA_MANDATORY), 4794 UVERBS_ATTR_PTR_OUT(BNXT_RE_ALLOC_PAGE_MMAP_LENGTH, 4795 UVERBS_ATTR_TYPE(u32), 4796 UA_MANDATORY), 4797 UVERBS_ATTR_PTR_OUT(BNXT_RE_ALLOC_PAGE_DPI, 4798 UVERBS_ATTR_TYPE(u32), 4799 UA_MANDATORY)); 4800 4801 DECLARE_UVERBS_NAMED_METHOD_DESTROY(BNXT_RE_METHOD_DESTROY_PAGE, 4802 UVERBS_ATTR_IDR(BNXT_RE_DESTROY_PAGE_HANDLE, 4803 BNXT_RE_OBJECT_ALLOC_PAGE, 4804 UVERBS_ACCESS_DESTROY, 4805 UA_MANDATORY)); 4806 4807 DECLARE_UVERBS_NAMED_OBJECT(BNXT_RE_OBJECT_ALLOC_PAGE, 4808 UVERBS_TYPE_ALLOC_IDR(alloc_page_obj_cleanup), 4809 &UVERBS_METHOD(BNXT_RE_METHOD_ALLOC_PAGE), 4810 &UVERBS_METHOD(BNXT_RE_METHOD_DESTROY_PAGE)); 4811 4812 DECLARE_UVERBS_NAMED_METHOD(BNXT_RE_METHOD_NOTIFY_DRV); 4813 4814 DECLARE_UVERBS_GLOBAL_METHODS(BNXT_RE_OBJECT_NOTIFY_DRV, 4815 &UVERBS_METHOD(BNXT_RE_METHOD_NOTIFY_DRV)); 4816 4817 /* Toggle MEM */ 4818 static int UVERBS_HANDLER(BNXT_RE_METHOD_GET_TOGGLE_MEM)(struct uverbs_attr_bundle *attrs) 4819 { 4820 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, BNXT_RE_TOGGLE_MEM_HANDLE); 4821 enum bnxt_re_mmap_flag mmap_flag = BNXT_RE_MMAP_TOGGLE_PAGE; 4822 enum bnxt_re_get_toggle_mem_type res_type; 4823 struct bnxt_re_user_mmap_entry *entry; 4824 struct bnxt_re_ucontext *uctx; 4825 struct ib_ucontext *ib_uctx; 4826 struct bnxt_re_dev *rdev; 4827 struct bnxt_re_srq *srq; 4828 u32 length = PAGE_SIZE; 4829 struct bnxt_re_cq *cq; 4830 u64 mem_offset; 4831 u32 offset = 0; 4832 u64 addr = 0; 4833 u32 res_id; 4834 int err; 4835 4836 ib_uctx = ib_uverbs_get_ucontext(attrs); 4837 if (IS_ERR(ib_uctx)) 4838 return PTR_ERR(ib_uctx); 4839 4840 err = uverbs_get_const(&res_type, attrs, BNXT_RE_TOGGLE_MEM_TYPE); 4841 if (err) 4842 return err; 4843 4844 uctx = container_of(ib_uctx, struct bnxt_re_ucontext, ib_uctx); 4845 rdev = uctx->rdev; 4846 err = uverbs_copy_from(&res_id, attrs, BNXT_RE_TOGGLE_MEM_RES_ID); 4847 if (err) 4848 return err; 4849 4850 switch (res_type) { 4851 case BNXT_RE_CQ_TOGGLE_MEM: 4852 cq = bnxt_re_search_for_cq(rdev, res_id); 4853 if (!cq) 4854 return -EINVAL; 4855 4856 addr = (u64)cq->uctx_cq_page; 4857 break; 4858 case BNXT_RE_SRQ_TOGGLE_MEM: 4859 srq = bnxt_re_search_for_srq(rdev, res_id); 4860 if (!srq) 4861 return -EINVAL; 4862 4863 addr = (u64)srq->uctx_srq_page; 4864 break; 4865 4866 default: 4867 return -EOPNOTSUPP; 4868 } 4869 4870 entry = bnxt_re_mmap_entry_insert(uctx, addr, mmap_flag, &mem_offset); 4871 if (!entry) 4872 return -ENOMEM; 4873 4874 uobj->object = entry; 4875 uverbs_finalize_uobj_create(attrs, BNXT_RE_TOGGLE_MEM_HANDLE); 4876 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_PAGE, 4877 &mem_offset, sizeof(mem_offset)); 4878 if (err) 4879 return err; 4880 4881 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_LENGTH, 4882 &length, sizeof(length)); 4883 if (err) 4884 return err; 4885 4886 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_OFFSET, 4887 &offset, sizeof(offset)); 4888 if (err) 4889 return err; 4890 4891 return 0; 4892 } 4893 4894 static int get_toggle_mem_obj_cleanup(struct ib_uobject *uobject, 4895 enum rdma_remove_reason why, 4896 struct uverbs_attr_bundle *attrs) 4897 { 4898 struct bnxt_re_user_mmap_entry *entry = uobject->object; 4899 4900 rdma_user_mmap_entry_remove(&entry->rdma_entry); 4901 return 0; 4902 } 4903 4904 DECLARE_UVERBS_NAMED_METHOD(BNXT_RE_METHOD_GET_TOGGLE_MEM, 4905 UVERBS_ATTR_IDR(BNXT_RE_TOGGLE_MEM_HANDLE, 4906 BNXT_RE_OBJECT_GET_TOGGLE_MEM, 4907 UVERBS_ACCESS_NEW, 4908 UA_MANDATORY), 4909 UVERBS_ATTR_CONST_IN(BNXT_RE_TOGGLE_MEM_TYPE, 4910 enum bnxt_re_get_toggle_mem_type, 4911 UA_MANDATORY), 4912 UVERBS_ATTR_PTR_IN(BNXT_RE_TOGGLE_MEM_RES_ID, 4913 UVERBS_ATTR_TYPE(u32), 4914 UA_MANDATORY), 4915 UVERBS_ATTR_PTR_OUT(BNXT_RE_TOGGLE_MEM_MMAP_PAGE, 4916 UVERBS_ATTR_TYPE(u64), 4917 UA_MANDATORY), 4918 UVERBS_ATTR_PTR_OUT(BNXT_RE_TOGGLE_MEM_MMAP_OFFSET, 4919 UVERBS_ATTR_TYPE(u32), 4920 UA_MANDATORY), 4921 UVERBS_ATTR_PTR_OUT(BNXT_RE_TOGGLE_MEM_MMAP_LENGTH, 4922 UVERBS_ATTR_TYPE(u32), 4923 UA_MANDATORY)); 4924 4925 DECLARE_UVERBS_NAMED_METHOD_DESTROY(BNXT_RE_METHOD_RELEASE_TOGGLE_MEM, 4926 UVERBS_ATTR_IDR(BNXT_RE_RELEASE_TOGGLE_MEM_HANDLE, 4927 BNXT_RE_OBJECT_GET_TOGGLE_MEM, 4928 UVERBS_ACCESS_DESTROY, 4929 UA_MANDATORY)); 4930 4931 DECLARE_UVERBS_NAMED_OBJECT(BNXT_RE_OBJECT_GET_TOGGLE_MEM, 4932 UVERBS_TYPE_ALLOC_IDR(get_toggle_mem_obj_cleanup), 4933 &UVERBS_METHOD(BNXT_RE_METHOD_GET_TOGGLE_MEM), 4934 &UVERBS_METHOD(BNXT_RE_METHOD_RELEASE_TOGGLE_MEM)); 4935 4936 const struct uapi_definition bnxt_re_uapi_defs[] = { 4937 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(BNXT_RE_OBJECT_ALLOC_PAGE), 4938 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(BNXT_RE_OBJECT_NOTIFY_DRV), 4939 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(BNXT_RE_OBJECT_GET_TOGGLE_MEM), 4940 {} 4941 }; 4942